1. Some say when Chan Heung returned from studying with Ching Cho , he went back to Jeong Yim and combined his knowledge into the Choy Li Fut system .
2. Some say that when Jeong Yim returned from studying with Ching Cho , he went back to Chan Heung and combined his knowledge into the Choy Li Fut System .

Are these two sentences paraphrases of each other?
no