In autumn and winter, it is recommended that middle-aged and elderly people often eat 5 kinds of natural calcium supplement vegetables, which have higher calcium content than milk.
"Afternoon tea" was also popular in ancient times. What are the exotic delicacies in the Tang Dynasty? If you want to have a glimpse of the dining tables of the ancients, read this book.
"Study Reports and Development" implements the strategy of building a country through science and education, and strengthens talent support for modernization construction