Tang Hou is the only one...really....interesting....incorrect.... but interesting.....
Most of what you posted has nothing to do with what I wrote by the way, you are currently defending Tang Hou not responding to any of what I wrote, especially the Li Luoneng bit where, if you are getting from Tang Hou that he changed Xingyiquan then both he and you are wrong since he changed Xinyiquan and developed Xingyiquan. There are other books that are older, there are people at universities who are studying this in China. You like to make gross generalizations, "all", "everything" and "nobody" but appear to base this only on Tang Hou. It is impossible to study, research or understand anything Chinese Martial Arts history from only one source and since I do not know Tang Hou sources at the moment, but I will, I cannot tell if what he says is actually historically verifiable.
But you want to believe you are now an expert based on one book by one guy who tells you everything so be it. I will not try and change your mind, you are not right, but that is your choice and I will quit posting corrected histories and leave you to your 1 book view