Why burn incense and worship Buddha with your right hand?

This is to follow the Indian custom. Indians grab food with their right hand and go to the toilet with their left hand to do something unclean, so they have always been "right-handed". However, the customs in China are more complicated. In the past dynasties, Xia, Shang and Zhou dynasties, officials respected the left; Swallow, kill, and respect military affairs. During the Warring States period, officials respected the left; The army respects rights. Qin Zun Zuo. Respect for rights in han dynasty. In the Six Dynasties, officials respected the right to drink and drink. The Tang, Song, Ming and Qing Dynasties respected the left and the Yuan Dynasty respected the right. Generally speaking, in festive activities, the left is the most important, and in the mourning of fierce injuries. At present, it is generally "respecting the left", while Buddhism has always been "respecting the right" since it was introduced to China from India in the Han Dynasty.