At one time the Royal Welsh Fusiliers were in possession of a quantity of solid gold plates, etc, which the regiment "liberated" from the Chinese imperial palace during the Relief of Peking after the siege of the legations there during the Boxer Rebellion in 1900. Wonder what happened to that?
There was also the burning of the Summer Palace by Elgin after the Taiping rebellion in the 1860's. It was sacked by Brit and French forces and the treasure they either looted or destroyed was reckoned to be priceless, not just in monetary terms but culturally. One of the greatest acts of vandalism in world history. Wonder what happened to that haul? I know that just one shoe belonging to the Chinese empress was sold for £25,000. Which was a fair amount in those days.
There were around 15 buildings left standing at the end which I believe were the buildings that were finished off in the Boxer Rebellion you mention.