Legend has it that in five generations after the antithetical couplet Shu Meng Chang.

对联相传起于五代后蜀主孟昶。

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Chang Peng Meng not know their opponent, critical when she make a prompt decision, turn to open the treasure box, take medicine in one gulp.

嫦娥知道自己不是蓬蒙的对手，危急之时她当机立断，转身打开百宝匣，拿出不死药一口吞了下去。

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It is performed during spring and autumn ceremonies to worship Meng Chang, the god of music, at weddings and funerals, and during joyful festivities in courtyards, markets and the streets.

UNESCO: Culture