Baiyun Mountain, situated in Dongyao Town, Linliu City, Henan Province, covers an area of 6 k㎡. Originally set up during the Shang-Zhou Period, this spot owns 12 courtyards and about 20 temples. In the Xinguo Temple (called “the first national temple”) situated in the southeast of the spot, there is a bell tower of Ming Dynasty, Emperor Yao’s imperial summer palace and many unearthed potsherds and porcelains with chevron pattern, zig-zag pattern, cord pattern and reticulate pattern