On this day, 121 years ago, on April 12, 1904 (February 27, 1904 in the lunar calendar), the Tibetan army and the British army fought in Gyangze. Tibetan troops bared in blood against invading British troops at Gyangz Fort On April 12, 1904, Tibetan troops fought against British troops in Gyangz. British Rong Hepeng, McDonald and others led more than 10,000 troops to invade Gyangzi and occupy the Tibetan government. The Tibetan army retaliated. On the one hand, it deployed suspicious troops in Karo, east of Gyangz, to attract the main force of the British army. On the other hand, it attacked the British base camp on the plains, conquered the Gyangz fortress, and surrounded all the British troops remaining in Gyangz, including Rong Hepeng, achieving the initial victory. On the 15th, Rong Hepeng said in his official document: "We quickly woke up from this confidence. So far, the lamas have only resisted our advance; now they are determined to attack us with their numbers." "The Lama's intelligence team must be very sophisticated. We divided our forces to attack Gayala, and their special cavalry immediately reported our weakness in Shigatse, which was fifty miles below the valley. On the same night, 1600 soldiers were dispatched from Shigatse to attack us. They advance day and night."