China has been ruled by emperors for more than a few thousand years. The emperors were a constant, regardless of the power they had at their disposal.
According to ancient texts, Empress Xi Ling Shi discovered the process of making silk in the 27th century BC. She is said to have discovered silk while serving her afternoon tea. Empress Xi Ling Shi cultivated the silkworms on the mulberry that her husband gave her. Empress Xi Ling Shi was named "Mother of Silkworms".