 Nguyễn Huệ proclaimed himself Emperor Quang Trung and defeated the Qing troops with 100,000 men in a surprise 7 day campaign during the lunar new year (Tết).There was even a rumor saying that Quang Trung had also planned to conquer China, although it was unclear.During his reign, Quang Trung envisioned many reforms but died by unknown reason on the way march south in 1792, at the age of 40.