Diagonals
Punches are always diagonal. The knee and ankle are not at a diagonal. The knee should be directly in line with the ankle.
Chen Taiji Academy: Senior students of Grandmaster Wang Hai Jun (Wang Haijun) teach individuals and classes in the fundamentals, principles and forms of the original Taiji from Chen Village, Chen Jiagou, China. These students teach and train in the eastern part of the United States.
Punches are always diagonal. The knee and ankle are not at a diagonal. The knee should be directly in line with the ankle.