Siphon effect. The siphon effect of Qingdao as a star city makes Zhucheng, a "close neighbor" county-level city, enjoy the cool by trees, so Zhucheng people will say that they are from Qingdao. Zhucheng is a county-level city in Shandong Province, which is managed by Weifang. It is named after the legend that Shun Di was born in fengcun, north of the city, also known as Longcheng.