What are the seven major libraries in China?

The seven collections in China should be seven attics for the collection of Sikuquanshu, namely Wen Yuan Pavilion, Wen Yuan Pavilion, Wenshui Pavilion, Jinwen Pavilion, Wenzong Pavilion, Wen Hui Pavilion and Wen Lan Pavilion. \x0d "Si Ku Quan Shu" is vast. It was never published in Fu Zi, but only seven volumes were hand-copied. They are stored in Wenyuan Pavilion in the Forbidden City in Beijing, Wenyuan Pavilion in Yuanmingyuan in the suburbs of Beijing, Wenshui Pavilion in Fengtian Palace (now Shenyang) and Jinwen Pavilion in chengde mountain resort. There are Wenzong Pavilion in Zhenjiang, Wenhui Pavilion in Yangzhou and Wen Lan Pavilion in Hangzhou. Pavilions and pavilions have experienced vicissitudes, and Wenzong Pavilion, Wenhui Pavilion and Wenyuan Pavilion were successively burned by soldiers. Only Yuan Wen, Jinwen, Wensu and Wen Lan still stand in the world. The details are as follows: \ x0d \ x0d \ Wenyuan Pavilion, located in the southeast of the Hall of Supreme Harmony in the Forbidden City, northwest of Donghuamen, behind the Wenhua Hall, was built in the forty years of Qing Qianlong (1775) and is collected by the Palace Museum. \x0d\ Wenyuan Pavilion, located in Beijing Yuanmingyuan, was built in Qianlong forty years (1775) and caught fire in Xianfeng ten years (1860) when Eight-Nation Alliance invaded. \x0d\ Wenjinge, located at the foot of the northwest plain of the Summer Resort (now Chengde City, Hebei Province), was founded in the thirty-ninth year of Qianlong (1774). Its collection was transported to Beijing on 19 15, and now it belongs to the National Library. \x0d\ Wensui Pavilion, located on the west side of the Forbidden City in Shenyang, Liaoning Province, was built in the forty-seventh year of Qianlong (1782). It is the most complete and least lost among the seven libraries, and now it belongs to Liaoning Provincial Library. \x0d\ Wenhui Pavilion, located in Daguantang, Jiangdu County, Jiangsu Province (now Yangzhou City), was built in forty-five years of Qianlong (1780) and destroyed by fire in four years of Xianfeng (1854). \x0d\ Wenzong Pavilion, located in Jinshan Temple, Zhenjiang City, Jiangsu Province, was built in the forty-fourth year of Qianlong (1779) and destroyed by fire in the third year of Xianfeng (1853). \x0d\ Wenlan Pavilion, located in the south of the isolated mountain of West Lake in Hangzhou, is the only one among the three pavilions in Jiangsu and Zhejiang. Founded in the forty-seventh year of Qianlong (1782), it was destroyed in the eleventh year of Xianfeng (186 1), and some books were lost. Guangxu six years (1880)