sorry, ane rada bingung antara Xin Yi (Hsin I) dg Xing Yi (Hsing I), ternyata mirip2 ya.... dibawah ane contek dari chinafrominside.com:
Xinyiquan and Xingyiquan
In most of the materials both styles of Xinyiquan (Hsin-I Chuan) and Xingyiquan (Hsing-I Chuan) are called by the latter name. This is mainly because Xingyiquan is by far more popular and influencial as well as because Xinyiquan for a long time has been considered lost art.
Xinyiquan (literally Mind-Intent Boxing) is said to have been created by Yue Fei, general, patriot and national hero who lived in Song dynasty (12th century). However historical records point at Ji Longfeng (Ji Jike) living in 17th century as the one who created the art on the basis of his experience in spear fighting. The art was passed to Ma Xueli, who transmitted it to moslem communities in Henan province and became the main self-defence mean Islam followers in China, kept in secret and not passed to people of other nationalities until 1930s. Another branch was passed to Dai clan in Shanxi province, who developed it into a very sophisticated and internalized art. Li Laoneng learnt from Dai clan in 19th century and taught in both Shanxi and Hebei provinces. It was Li and his students who made the art very popular. From their times the art changed its name into Xingyiquan (literally Shape-Intent Boxing) and was completely reformed into a style differing a lot from Xinyiquan. It was Xingyiquan that Yi Quan (Intent Boxing) was based on when created by Wang Xiangzhai.
There is other arts closely related to Xinyiquan. One is Shaolin Xinyiba, the most treasured of all Shaolin styles, while he other is called Jin Family Gongfu (Skill) and is still practiced by a small number of practitioners in Sichuan province.
Technically Xinyi and Xingyi share common feature of straight line drills, with direct and effective movements. The difference between styles lies in basic methods: Xinyi is based on Dantian methods, practised in movement, while Xingyi stresses importance of still standing in San Ti stance.
Of all internal arts Xinyiquan and Xingyiquan were considered those that could give the fighting skill in shortest time due to its focus on Obvious Power during the first years of practice. As Chinese saying goes "Taiji does not leave practice hall for ten years, while Xinyi kills in one year".