What are the origins of International Workers' Day (Labor Day)?

When did China start celebrating Labor Day?

Dedication is the key to being a good worker.

The story behind this idiom about deception comes from one of the most famous and fabled chapters in Chinese history, the much-dramatized rivalry between Xiang Yu and Liu Bang. After both generals helped to bring down the Qin Dynasty, Xiang Yu divided China into 18 kingdoms, taking vast, fertile territory for himself and giving Liu Bang remote, mountainous land.

Like the secret to performing tai chi, to reach a state in which troubles are a thing of our past, we must forget everything including our material worth and troubles and become one with nature.