1368-1912 919-967 960-1368 active11thcentury art artobjects beijing catalogs china chinese exhibitions gugongbowuyuan(china) historyguoligugongbowuyuan history國立故宮博物院 landscapepainting ming-qingdynasties song-yuandynasties taipei taiwain taiwan 國立故宮博物院 李成 郭熙