Toona sinensis is a delicious food and a perennial woody vegetable in ancient China. It grows in Shandong, Anhui, Henan and other areas. Shanxi is the most famous. According to historical records, Toona sinensis was sent to Chang 'an as a tribute as early as the Tang Dynasty for princes and nobles to eat. Toona sinensis is not only edible, but also has certain medicinal value in all parts of its body and can be used as medicine, so our ancestors discovered this function very early. According to records, it spread all over the country in the spring of Han Dynasty. According to the traffic and geography at that time, it was probably discovered and eaten by our ancestors as early as the Spring and Autumn Period and the Warring States Period. Because although it was recorded in the Han Dynasty, the traffic was inconvenient at that time, and it took a lot of time and manpower to spread a plant all over the country.

It was popularized all over the country in the Han Dynasty, so it must have been discovered and its function was discovered before it could be popularized. Toona sinensis was not only eaten and used as medicine in ancient times, but also had the function of wishing others a long life. Usually bless thousands of others.

Toona sinensis, whose medicinal value was recorded in the Tang Dynasty, was operated on a large scale among the people, so it certainly didn't become popular until the Han Dynasty, and it was probably a step forward. For example, during the Spring and Autumn Period and the Warring States Period, or the Qin Dynasty. As a kind of food, Toona sinensis could not be propagated by others at that time. You can only grow up on your own, waiting for your ancestors to find out. So China first ate Toona sinensis in the Spring and Autumn Period and the Warring States Period, because it was popularized in the Han Dynasty. But the possibility of the Spring and Autumn Period and the Warring States Period is very great. At that time, after years of fighting, people were hungry. When they find the green Toona sinensis, they are most likely to eat it and study whether it is higher.

Therefore, the delicacy of Toona sinensis, its first bite, is estimated to have appeared in order to fill the stomach during the Spring and Autumn Period and the Warring States Period.