Contemporary Chinese artist Han Meilin, third right, head of China Post, Liu Aili, center, attend a stamp issuing event for the upcoming Year of the Rat on Jan 5. (Photos: China Daily)

Han Meilin, center, contemporary Chinese artist, attends a stamp issuing event for the upcoming Year of the Rat on Jan 5.

Han Meilin, right, contemporary Chinese artist, signs his name for stamp collecting lovers after a stamp issuing event for the upcoming Year of the Rat on Jan 5.

Han Meilin, contemporary Chinese artist, signs his name for stamp collecting lovers after a stamp issuing event for the upcoming Year of the Rat on Jan 5.

A stamp collecting lover displays a first day cover with a signature of the contemporary Chinese artist Han Meilin on Jan 5.