Bus number 286. According to Baidu map, Shenyang Library needs to take bus No.286 to Zhao Erxun Mansion, which takes 7.6 kilometers and takes 58 minutes. The specific bus routes are as follows:

1. First, walk 560m from Shenyang Library and take bus No.286 at Mao Ye Central Station of Wulihe River.

2. Secondly, get off at Provincial Oriental Hospital Station after passing 18 station.

3. Finally, walk 1. 1 km to reach Zhao Erxun Mansion.