Complex sentence: For years the Masters Yang Jun and Yang Zhen Duo had visited these Yang Chengfu Tai Chi Chuan Centers, so the time was ripe for the creation of an "International Organization" which combined the centers and schools in each country into a cohesive structure.
Split into simpler sentences: For years the Masters Yang Jun and Yang Zhen Duo had visited these Yang Chengfu Tai Chi Chuan Centers. So, the time was ripe for the creation of an "International Organization" which combined the centers and schools in each country into a cohesive structure.