Lake Biwa is located at the outer edge of Zhongshan Scenic Area and in Qianhu Scenic Area. Originally, the hotel "Pipa Villa" was built in the scenic spot between Pipa Lake and Ming City Wall. As the hotel pollution is directly discharged into Lake Biwa, the lake water is seriously eutrophic and begins to stink.

Nanjing citizens and Nanjing media reacted strongly to Pipa Villa. Nanjing has included the renovation of Lake Biwa as part of the renovation of the newly planned scenic spot of Qianhu Lake. Not only has the villa of Lake Biwa been demolished, but it will also be built into a distinctive park.

Cai Long, deputy general manager of Nanjing Urban Construction Holding Group, said that up to now, the Pipa Park project has demolished 2 1 1 household and enterprise 1 household, with a construction area of 1.6 million square meters, of which the original Pipa Villa is more than 3,000 square meters, thus cutting off all pollution sources leading to Lake Biwa. After the renovation, the green area here will increase from 6.6 hectares to 8.99 hectares, an increase of 36.2%, and the green rate will reach 88.5%; The water area expanded from 4.5 hectares to 5.46 hectares, an increase of 21.3%; The construction land area decreased from 5.02 hectares to 1. 15 hectares, a decrease of 77. 1%.