"Dark Dragon Enters a Well" is a marvelous counter against the attack, "Dark Dragon Draws Water", with which a skillful exponent has more than 70% chance of defeating an average opponent
Grandmaster Wong explains a number of finer points hidden in Combat Sequence 6, "Dark Dragon Draws Water". Firstly, if having practiced this sequence 50 times a day for 3 months, you apply it on an average attacker, you have at least 70% chance of defeating him as soon as he executes a right middle attack. The counter for this counter-attack, as well as their subsequent counters are marvelous, manifesting the first line of a poetic couplet enshrined in our school, namely "Marvelous Techniques Beget Marvelous Techniques".