BP(iv) – BP(v) is where students are introduced to the 3-Count.
Doing the movement of lifting the hands is not difficult. What is difficult to do is to be able to clearly demonstrate that your intention is clearly doing the work rather than getting lost amidst the movement. If your intention is not clear then you will have a problem doing Structure Test No. 1 as mentioned on page 256.
Take your time to investigate BP(iv) – BP(v) because this is one of three core arm movements that is used in the form and for push hands. If you don’t do it properly you will have a hard time doing our type of fajing during push hands.
But if you get it down pat then you should have no problem demonstrating your mastery by doing the fajing in Push at a fundamental level on a willing partner. In this test you should have no problem using the principle of BP(iv) – BP(v) to uproot and send your partner off-balance.