What is the magnitude length and damage of China's 1927 earthquake?

The magnitude of the 1923 Tokyo earthquake was 7.9 on the Richter scale.

Length of quake: 4-10 minutes.

Overall, estimated damage included the loss of 570,000 residences and a cost in excess of one billion U.S. dollars in today's figures. There were 105,000 confirmed deaths, and another 40,000 or so who went missing.