the original weighted bamboo baskets. The Baopingkou or Bottle-Neck Channel, which was gouged through the mountain, is the final part of the system. The channel distributes the water to the farmlands in the Chengdu Plain, whilst the narrow entrance, that gives it its name, works as a check gate, creating the whirlpool flow that carries away the excess water over Flying Sand Fence, to ensure against flooding. Anlan Suspension Bridge Anlan or Couple's Bridge spans the full width of the river connecting the artificial island to both banks and is known as one of the Five Ancient Bridges of China. The original Zhupu Bridge only spanned the inner stream connecting the levee to the foot of Mount Yulei. This was replaced in the Song dynasty by Pingshi Bridge which burned down during the wars that marked the end of the Ming dynasty. In 1803 during the Qing dynasty a local man named He Xiande and his wife proposed the construction of a replacement, made of wooden plates and bamboo handrails, to span both streams and this was nicknamed Couple's Bridge in their honour. This was demolished in the 1970s and replaced by a modern bridge. Temple Sites Two Kings Temple Erwang or Two Kings Temple is on the bank of the river at the foot of Mount Yulei. The original Wangdi Temple built in memory of an ancient Shu king was moved, so locals renamed the temple here. The 10,072 m2 Qing dynasty wooden complex conforms to the traditional standard of temple design except that it does not follow a north–south axis. The main hall, which contains a modern statue of Li Bing, opens up onto a courtyard facing an opera stage. On Li Bing's traditional birthday, 24th day of the 7th month of the lunar calendar, local operas were performed for the public, and on Tomb Sweeping Day a Water Throwing Festival is held. The rear hall contains a modern statue of the god Erlang Shen. Some say Erlang Shen was Li Erlang, but historic records do not confirm this, and it is possible that he was invented by locals as a false god. Guanlantin Pavilion stands above the complex and is inscribed with wise words from Li Bing such as, When the river flows in zigzags, cut a straight channel; when the riverbed is wide and shallow, dig it deeper. Dragon-Taming Temple Fulongguan or Dragon-Taming Temple in Lidui