Sink Bridge - Sticky Hand - Yongchun Quan Series : Sink Bridge (Chen qiao) is the advance routine in YongChun quan. It's the most important transition to actual combat. Master it, you will know how to combat. Sink Bridge follow the basic hand technique, completing kinds of techniques with the cooperation of hand including changing of horse-stance and advancing horse. There are many practice, including hand technique and foot technique, by which learners can strengthen their waist, bridge and horse-stance and make more powerful attack.