Tanghulu，is fruit covered with sugar on a stick，a traditional snack from northern China．It's also a necessary snack during the Chinese New Year season．Recently，in northern China，people welcome the return of spring by holding the Tanghulu Fair（庙会）．

Many Chinese still remember eating Tanghulu when they were young．It is said that the fair has a 500﹣year﹣old history．Nowadays，Tanghulu is not only a kind of snack，it is also a sweet memory of our childhood．Every year，a large number of Tanghulu sellers get together to start delicious Tanghulu Competition during the Spring Festival holidays．In the past，this traditional snack only used haws（山楂），but now it also uses grapes，oranges，strawberries and so on．But people like Haw Tanghulu best．They are rich in Vitamin（维他命）C and E．Do you know how to make Haw Tanghulu？First，wash the large haws clean，dig the seeds（籽） out，and pierce（串）ten haws on a stick．Then they heat the sugar，put the sticks of haws into heated and quickly pull them out．When the sugar on the haws cools down and becomes a candy coat，the Tanghulu is done．Tanghulu is very popular in China，especially in Beijing．It also makes many foreigners want to taste it．

76．Where is Tanghulu from？ 　　

77．How do people welcome the return of spring in northern China？ 　　

78．What do the Tanghulu sellers get together to do during the Spring Festival holidays every year？ 　　

79．What kind of Vitamin is the Haw Tanghulu rich in？ 　　

80．What is the passage mainly about？