My former Taijiquan teacher, Mark Wasson, spent a lot of time in the Chen Village training with members of the Chen family, including Chen Xiaowang, Chen Xiaoxing, and Chen Bing.
On one visit, the weather was bad so Chen Bing came to Mark's hotel room to practice push hands.
Mark helped spread Chen Taiji into the United States. He was one of the instructors who sponsored members of the Chen family, arranged for them to get visas, and helped them set up workshops.
I was lucky enough to be Mark's student at a time when Chen Xiaoxing made one of his first visit to the United States. I flew out to California for a day of private training with them, and I filled pages of notes on the plane during my trip home. Later, I personally sponsored Chen Xiaoxing's visa for one of his trips, and he repaid me by staying a week at my home.
Mark died in 2013 after suffering from Crohn's Disease and mental illness for many years.