Spring rolls is a very delicious snack, in the history of spring rolls is in what period of time flourished?

Spring rolls have a long history in China, northerners also known as "spring cake". It is rumored that in the Eastern Jin Dynasty. At that time, it was called "spring plate". At that time, people every spring this day, will be made of flour pancakes spread on the plate, plus fine vegetables to eat, so called "spring plate". At that time, not only the spring this day to eat, spring tour people also bring "spring plate". By the time of the Tang and Song dynasties, this custom was even more prevalent. The famous poet Du Fu's "spring spring plate of fine lettuce" and Lu You's "spring spring plate of new festivals" are true reflections of the people of the Tang and Song dynasties this custom of life. In the Tang Dynasty, the spring plate is also called the five Xin plate.