Re: Chinese Martial Arts and Aikido
I tend to go with the 'no historical evidence' to support the Chinese arts influenced Ueshiba.
The body is only built one way, good systems with similar philosophies will find similar ways to attack the vulnerabilities.
If you have interest in the similarities, which there are many - go study with someone who has trained in both. My current teacher has 30+ years of Aikido, and a similar amount of time in the Chinese arts including Tai Chi, Chinese Boxing, and some others. He regularly points out the similarities, when in town for a seminar. I find it interesting and helpful in understanding Aikido, or at least the Chinese view of what we are trying to do.
He threatened to author some books on the subject, before the books mentioned were published - but he prefers practice...