天狗 tian gou:A celestial dog that swallows the sun and the moon from time to time, which caused solar/lunar eclipses.
Thus in Chinese tradition, the luna, especially the solar, eclipses are viewed as a sign foreshadowing ill-fated events.
On the other hand, Chinese discovered the natural cause of solar/lunar eclipses when the Classics of Mountains and Seas was complied, with the earliest Chinese record on solar eclipse dating back to 2,000 BC.