1900, Eight-Nation Alliance invaded Beijing, not only the Summer Palace was looted (later restored in 1903), but also the site of Yuanmingyuan was completely destroyed. Due to the escape of the garden management organization, the idle flag soldiers and hooligans in the park began to steal building materials. During the Republic of China, the ruins were even more neglected. Warlords of all factions and even many rich people come here to carry stones to build tombs and gardens. In the past twenty or thirty years, there have been an endless stream of stolen carriages almost every day, and the remnant garden has become a "stone yard".