This is the home of some wealthy person in Nanjing. A very large house, with very fancy traditional architectural highlights, backing directly onto the Grand Canal, with a private dock. Life is good.
Philosophizing in another direction, again, on the Rape of Nanjing.
The brutality and terror were awesome, but the other side of the coin is that the government was aware of the pending invasion, and broadcast word to the people that they were to remain inside the city, that to run would be as tile is to jade. Further, they locked the gates to the inner city, trapping upwards of 1/2 million citizens in anticipation of the slaughter. This Memorial and the advertising of the government is, I think, a way to keep tensions high with Japan for political reasons both internally and globally, not only to respect those lost in the siege.