In Beijing, there are four such pavilions: Tanzhe Temple, Zhongnanhai, the Forbidden City and Gongwangfu. Liu Beiting in Yuanmingyuan was destroyed in Eight-Nation Alliance, leaving only a stone platform engraved with a pool. Among them, Gongwangfu is the smallest, because those are used by the royal family. Xiao Shenyang often holds banquets here to entertain his colleagues for their birthdays. The flowing water enters from the south of the pavilion, passes through the curved waterway on the ground, and finally flows out from the north of the pavilion and flows into the bat pond from the back canal. Water has always been a symbol of blessing and talent. The location of the water outlet is the theme, facing south, and the owner Xiao Shenyang is sitting here. On his birthday, when the cup is parked on which guest, the guest will put the prepared gift list in the cup, and finally the cup will float to Xiao Shenyang, and Xiao Shenyang will sit at the water outlet to receive the bride price, which is called "later". The waterway on the ground, from north to south, is a word "longevity". Looking from east to west, it is also the word "water" in cursive script, so this pavilion is also called "sailor pavilion". Its uniqueness lies in the different fonts from different directions, namely water, longevity and pavilion. It means ingenious ideas.