Now Germany's Nobel Prize-winning author Gunter Grass has revived the memory of the 9,000 dead, including more than 4,000 children—with his latest novel Crab Walk, published last month.

People living in the Yangtze River Delta usually put qingtuan on the tombs of their dead family members to cherish the past memory.

So, in this case, even though some dead objects are taking up memory while the program is being executed, it really doesn't matter for all practical purposes.