It should further be noted that Some people Claim Yuen Chai Wan learned from Fung Siu Ching invited by the father (who would have been more than 90 years old, if he was still alive) in 1933.

In addition according to the older branches of the lines of Fung Siu Ching, he was not known to have taught any of the forms later claimed to his disciples, and was reputed to have retired in his old age to his home village around the time Tang Suen took over teaching.

When Yuen was completely mature and reached a high level of martial arts, he participated in the fight against foreign invaders and the Qing dynasty.

[8] Few people know that the main reason Yuen's disciple Tran Thuc Tien came to the internal practice of Wing Chun as a cure for tuberculosis.

At that time, Yuen opened a traditional medicine shop on Hang Buom street, but mainly taught martial arts.

In October 1911, all the localities in South and Central China rose up for the Xinhai Revolution, and on February 12, 1912, the young king Pu Yi came out to show only to abolish the Qing dynasty.

After the Qing dynasty was abolished, Yuen continued to pursue the path of martial arts and participated in the resistance war against intervention by European countries and Japan, he worked secretly under the command of Chiang Kai-shek and witnessed many things.

Aged 59, Yuen decided to resign and live a peaceful life to focus on studying Wing Chun and teaching his students.

With the bravery and experience of the person who had worked in covert operations, he got rid of the "kind" people, then he changed his name to Nguyen Te-Cong and left China.

[4][5][6][7] With the help of his disciples, in 1936 (some sources claim 1929-1930) Yuen left the country on a merchant boat and arrived at Hai Phong port, Vietnam there he changed his name to Nguyen Te-Cong who was a famous Buddhist saint.

[2] From his new residence, he kept up with events in China and expected a change, but the news he received from Yuyao, a disciple and a friend of his, was disappointing and he abandoned all hopes of returning to his homeland.

Yuen and his disciple Chen Tai were invited to the mansion of a very prestigious elder named Dai Li-jai whose ancestors lived in Vietnam since 1805.