From Chinese Watch Wiki
Zhufeng (珠峰) was a watch brand produced by Tianjin Clock & Watch Factory. The name is an abbreviation of "Zhumulangma Feng" (珠穆朗玛峰), Chinese transliteration of "Chomolungma", the Tibetan name for Mount Everest. The brand's logo is a small, stylised mountain range. Zhufeng watches used the Chinese Standard Movement, with train bridges stamped with the codes "STZ1", "ZTZA".
Many Zhufeng watches feature a striking caseback design featuring a galloping horse. The horse is based on a Han dynasty bronze statue of a flying horse.