http://journalism.missouri.edu/~jschool ... /table.htm
It does not mention any Triad connection with the Chung Shan Tang and the Red Swastika Society(still kicking on in Taiwan today) but as a mere Occidental mortal I'm open minded to other views.
The burial records themselves are also prone to criticism:
The second question often raised by many is the credibility of burial records of the Chung Shan Tang (Tsung Shan Tong), a 140-year-old charitable organization in Nanjing. Although their reports that recorded the burial of 112,267 bodies was adduced to the International Military Tribunal for the Far East, they were actually prepared for the tribunal after the war ended because the original manuscripts were allegedly all lost during the eight years of Japanese occupation.
Of course that does not mean that the Chung Shan Tang doctored their reports. The available Chinese documents of that time showed that the organization started burying the dead bodies scattered over certain parts of the city at the beginning of 1938 at the latest. Forty full-time staff and numerous part-timers buried their countrymen and women inside the city walls until March and worked outside of the walls in April.
It should be noted, however, that none of the other documents written by members of the International Committee or the Japanese authorities in Nanjing mentioned that the Tsun Shan Tang was engaged in burial work, while they recorded that another charitable organization, the Red Swastika Society, buried about 40,000 bodies.
...almost all historians note that the exact death toll is not the highest priority in comprehending what actually happened in Nanking. They point out that there were other crimes such as rape, pillage, and arson that are now impossible to quantify.