What do you mean by four blasphemies in five mountains?

Five holy mountains

Mount Taishan in Dongyue (now Shandong), Mount Huashan in Xiyue (now Shaanxi), Mount Hengshan in Nanyue (now Hunan), Mount Hengshan in Beiyue (now Shanxi) and Mount Songshan in Zhongyue (now Henan).

Sidu

Jiang, He, Huai and Ji are the waters of Yangtze River, Yellow River, Huaihe River and Ji.