19 Jinchaidai Alley (simplified Chinese: 金钗袋巷19号; traditional Chinese: 金釵袋巷19號; pinyin: jīnchāidài xiàng 19-hào), in Shangcheng District, Hangzhou, Zhejiang, China, is a former residence constructed during the Qing dynasty, which was used during the Xinhai Revolution that led to the dynasty's collapse. Despite concerns over its historical significance, the building began to be demolished in 2010 despite its addition to the fifth batch of protected historical buildings in Hangzhou earlier that year, although its demolition was stopped by the city government's intervention. The building has now been renovated, and serves as part of the campus of the Jianlan Middle School's Lanxin Academy of Classical Learning, a private school in the city.