After in World War II, the United States and the Soviet Union have been in the Cold War state for a long time due to differences in ideology and differences in interests. Our country is a socialist country in . It chose a pro-Soviet foreign war strategy, which led to a very bad relationship between our country and the United States and was suppressed and blocked by the United States for a long time. Most US presidents are very hostile to our country, but these five US presidents are very friendly to China. What is the reason behind it?

1, Roosevelt
Roosevelt is the 32nd president of the United States and the only president in American history to be re-elected for 4 terms.
In 1929, an unprecedented economic crisis broke out in the United States and around the world. The stock market collapsed, banks went bankrupt, market depression, production plummeted, unemployed people surged, people's living standards plummeted, many people were on the verge of bankruptcy, and the United States entered the "Great Depression" period. Against this backdrop, Roosevelt was elected President of the United States. He began to implement the "New Deal", turning the tide and saving the American people and the economy by rectifying the financial industry, adjusting agriculture, establishing public works, increasing employment, and carrying out social relief.
1939, Germany blitzed Polish , triggering World War II .
In the early days of World War II, the United States pursued "isolationism" and was unwilling to participate in the war. Instead, it made a fortune by selling strategic materials to the warring parties. When Germany defeated Poland, France and other countries in succession through the "blitzkrieg", the American elite began to worry, and they were afraid that after the defeat of fascist countries such as Germany and Japan would cause crisis. The US Congress passed the Lease Act and began to support China, the Soviet Union, Britain and other countries in the War of Resistance. In order to support our country's war of resistance, the United States also imposed an embargo on oil and steel on Japan.

Japan is a country with scarce resources. After strategic resources such as oil and steel were banned, Japan fell into trouble. In order to maintain the war and achieve the final victory, Japan decided to go south to Indonesia and other southwest Asia regions to seize resources. At that time, Philippines was a colony of the United States. In order to prevent US military interference, Japan took a risk and attacked Pearl Harbor, the US Pacific Fleet base.
This caused US Pacific Fleet to suffer heavy blows, killing 2403 people in the United States, 255 people missing and 1178 people injured. The United States was extremely angry and declared war on Japan. As expected, Japan also suffered heavy damage to the US military and successfully captured Indonesia and other regions.
After the outbreak of the Pacific War , our country and the United States became allies.
In order to make our country persist in the War of Resistance, we dragged more Japanese troops on the Chinese battlefield and relieved the pressure on the US military in the Pacific battlefield , the United States transported a large amount of anti-Japanese materials to our country through the my country-Myanmar highway and the hump route , and sent Flying Tigers to China to fight against Japan, which is good for our country.

November 1943, US President Roosevelt proposed the establishment of the United Nations, which was recognized by Stalin and Churchill . Stalin wanted the United States, the Soviet Union and the United Kingdom to serve as permanent members of the United Nations. At that time, the relationship between the Republic of China government and the United States was very close. In order to win over our country, the United States became a bridgehead for the United States to curb the Soviet Union in Asia, Pacific, and after the war. With Stalin and Churchill opposing it, Roosevelt supported our country and made China a permanent member of the United Nations.
Roosevelt is very friendly to our country. In 1945, after Roosevelt's death, Truman became the president of the United States, and Sino-US relations went downhill.
2. Nixon
In 1950, after the US military intervened in the Korean civil war, for the sake of our country's strategic security, our country made the decision to resist the U.S. aggression and aid Korea , and sent volunteer troops to cross the Yalu River to help the North Korean people resist the U.S. military. The arrival of the volunteer army quickly reversed the battlefield situation and drove the US army back to Line 38. Korean War lasted for three years. After the US military was unable to defeat the Volunteer Army, it could only sign a peace agreement with the Volunteer Army.

After the war, the United States held a grudge and began to suppress, sanction and blockade our country. Several US presidents since Truman have been very hostile to our country.
Nixon is the 37th president of the United States. When he first entered politics and became a member of parliament, Nixon was a very anti-China politician and had publicly criticized China on many occasions. In 1968, Nixon won the election and became the president of the United States, but he changed his attitude towards China.
Nixon's anti-China or friendly to China is based on American interests.
In 1955, after the outbreak of Vietnam War, the United States supported South Vietnam could not defeat North Vietnam, so the United States forced to come to the scene in person and participated in the Vietnam War. Vietnam is weak, but with its mountainous terrain advantages, it dragged the powerful US army into the quagmire of war.
The United States has invested a lot of manpower and financial resources, but it cannot defeat North Vietnam. Vietnam War became a burden to the United States and consumed a lot of national strength of the United States.

At the same time, in 1974, Arab countries such as Saudi Arabia , Egypt lost the Fourth Middle East War , in order to retaliate against Israel and its supporters, they began to collectively reduce oil production and regain oil price rights, resulting in a surge in global oil prices and triggering an oil crisis.
The United States is the world's major oil importer, and the surge in oil prices has hit hard US economy . The US rival, the Soviet Union, is a major oil exporter. After the price soared, it made a fortune, allowing the Soviet Union to gradually surpass the United States, which was deeply trapped in the quagmire of Vietnam War.
After the confrontation between the United States and the Soviet Union fell at a disadvantage, he focused on our country. Our country and the Soviet Union were originally very friendly. The Soviet Union helped our country 1156 key projects, , and helped our country build a complete industrial system. In the 1960s, Sino-Soviet relations began to deteriorate. To this end, the United States began to win over our country, hoping to use our country's strength to balance the United States' disadvantages in the process of the US-Soviet confrontation.

This also made Nixon change his attitude and become friendly to China.
In 1972, Nixon took the initiative to visit China, achieving the "ice breaking" of Sino-US relations, and opening a door for friendly exchanges between China and the United States. At the same time, China and the United States also signed the Sino-US Joint Communiqué. In the communiqué, both sides stated: "It is in the interests of all countries to normalize relations between China and the United States." On the Taiwan issue, China reiterated the principle of "one China". After the improvement of Sino-US relations, my country ushered in a wave of diplomatic relations, and established diplomatic relations with many countries such as Japan, which also diversified our country's diplomacy.
3, Reagan
Reagan is the 40th president of the United States.
In 1981, when Reagan became the president of the United States, the domestic inflation was severe, the unemployment rate remained high, and the economy was very bad. He improved the US economy by reducing government spending, reducing money supply, increasing US Treasury bonds, etc. The United States and the Soviet Union were also at a disadvantage. In order to reverse the unfavorable situation, Reagan proposed the " Star Wars Plan ", which put the Soviet Union into the trap of an arms race.

At the same time, in 1979, the Soviet Union launched the war on Afghanistan , which put it in the quagmire of Afghanistan war and carried a heavy burden. The United States also joined forces with Saudi Arabia to deliberately lower the price of crude oil, causing the Soviet Union, which relied heavily on oil, to have an economic recession and a fiscal crisis. This eventually dragged down the Soviet Union and disintegrated it. Americans praised Reagan: "I won the Cold War without firing a shot."
In 1980, when Reagan ran for president, he said he would be tough on China. In November 1981, when the UN General Assembly elected the Secretary-General, 16 consecutive rounds of mutual denial incidents occurred between China and the United States. my country has repeatedly used a veto power to deny the candidates supported by the United States, which made President Reagan realize that attempting to ignore our country in international affairs is definitely a wrong option, so he attached importance to its relations with our country. In addition, the United States and the Soviet Union are also a powerful opponent. Reagan, like presidents such as Nixon, also chose to win over our country to check and balance the Soviet Union.
This makes Reagan always friendly to our country.

4. Bush, the old man, is the 41st president of the United States.
During the Reagan period, Sino-US relations were in the "honeymoon period", which made Americans quite fond of our country. Bush Sr. has a good impression of China.
In 1974, Bush Sr. could be the ambassador to the UK, but he believed that our country was a great power with great potential and would rise in the near future and become an important big power, so he chose to be the ambassador to China. During his time in China, Bush Lao often rode his bicycle around the streets and went to eat delicious Chinese food. Bush Lao liked to eat Beijing roast duck the most, and people praised him as the "bike ambassador."
In 1989, after Bush was elected president of the United States, the first country he visited was not a traditional allies such as Britain and France, but China, which shows that Bush attached great importance to Sino-US relations. Bush visited China more than 20 times in his life, and Chinese photos were hung in his office. In 2008, when our country held the Olympics, Bush, who came to China again, said: "I feel like I'm going home."
Bush Sr. is a US president who is very friendly to China.

5. Bush Jr.
Bush Jr. is the 43rd President of the United States.
Influenced by his father Bush Sr., Bush Jr. is also a US president who is more friendly to China. In 2008, some Western politicians called for "boycott" of the Beijing Olympics, including the US Congress Speaker Pelosi , but Bush Jr. ignored their farce and attended the opening ceremony of the Beijing Olympics with his wife Laura .
During the reign of Bush, the famous 911 terrorist attacks occurred. In 2001, Bush launched the Afghan war on the grounds of fighting terrorism. In 2003, Saddam announced the use of the euro to settle his country's oil, which shakes the oil-dollar system and damages the core interests of the United States. Bush Jr. launched the Iraq War on the grounds that he had weapons of mass destruction and secretly supported terrorists. After the United States was caught in two wars at the same time, it did not dare to clash with other powerful countries again.
During the Bush period, the relationship between China and the United States was relatively stable, giving my country a decade of golden development time and gradually strengthening.