Because all the oil rich MENA Countries sell as much oil as they can to China, and China is brutal on their Muslim citizens, but business is business. Where are the marches, the boycotts, the international condemnations?
But you incorrect, because the EU and the US (the West) collectively does more trade with China.
China, by itself has the largest number of neighbors (14) sharing its 22,000 km land borders namely: North Korea, Russia, Mongolia, Kazakhstan, Kyrgyzstan, Tajikistan, Afghanistan, Pakistan, India, Nepal, Bhutan, Myanmar, Laos and Vietnam and China is embroiled in territorial disputes all of them.