You said:
"He (Dr. Fang) has conducted himself as a man seeking revenge at all costs and has tried to discredit Dr Xiao at every turn."

Did you mean the explicit life threat like this? "I would not hesitate to avenge Fan Zhouzi in the most treacherous way." (In Chinese: 我也会不惜用最歹毒的方式报仇, source: http://www.starlakeporch.net/bbs/read.php?1,56338,56419#msg-56419)

This was said by Xiao in his internet post, shortly after Chinese reporters and pro-bono lawyers discovered his procedure to be not only ineffective but also causing numerous permanent disabilities.

More over, have you ever heard of that Dr. Xiao's "life goals are welldoing, money and REVENGE"? This was declared in his talk in Tsinghua University.

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