One day while Lu Chan was working in a local grain store, a rude man came into the Tai He pharmacy next to where Lu Chan was working. The man wanted to buy some expensive herbs, but was only willing to pay a cheap price. The man shouted and waved
his fists.
The next thing Lu Chan saw was the man being thrown into the street without any effort by the pharmacy owner. Lu Chan felt this was quite odd for a person to be able to do such a feat without the use of force. The name of the pharmacy owner was Chen De Hu.
After a few days had passed, Lu Chan built up enough courage and went to Chen De Hu to ask to become his student. Chen was at first fairly cautious, but after seeing that Lu Chan was upright and honest, he told Lu Chan he was from the Chen Village (Chen
Jia Gou) in Wen Xian County of Henan Province. He said there were many people who studied Tai Chi Chuan in the village. He also explained that his teacher was the famous Tai Chi Chuan master, Chen Chang Xing.
Upon hearing this, Lu Chan was very excited
and immediately wanted Chen De Hu to introduce him to Chen Chang Xing.
http://users.cybercity.dk/~ccc6881/history.html
a couple of interesting points that people seem to forget.
In some histories Yang knew or practiced some arts before learning the chen style.
Taiji would not be called taiji until after the propagation of the style through the yang family even the yang family did not call it taiji in the begining. I doubt that a chen family member would refer to their art as taiji at this time.
If we view that the man makes the art, Yang must have been highly skilled and understood many things that apparently some of the Chen members did not or did not practice at that time. Stories record that he was supposed to have beat some of the chen family members in a contest befor leaving.
later he would change what he learned to reflect his own ideas and accumplishments. weather it still retains the essense of the chen style or not depends on ones views and understandings of the chen style.
This is not to say the yang style or any style of taiji is better then the others, I view them as just variations on a theme with the chen style being a starting point depending on which histories one follows.