When playing Axis & Allies as Japan I occasionally have an opponent use the "Kwabang" opening against me, which is where UK attacks Kwangtung on her opening move with the two infantry and fighter in India (landing the fighter in China, typically).

My usual opening move with Japan involves attacking the Pearl Harbor fleet, but when UK opens with a successful Kwabang attack (meaning they capture the territory with at least one infantry) I call that attack off and instead do the following:

• Send one infantry from Burma into India.
• Send my two transports with four infantry into Kwangtung, along with the two battleships (and pray that the transport doesn't strike a blow).
• Throw all of my available infantry (3 in Manchuria, 1 in Burma) plus all air power into attacking China, especially if the UK fighter is based there.
• Move all remaining naval units to the Japan Sea Zone.

While this strategy usually works well enough to retake Kwangtung and to capture China (and, more importantly, to remove the US and UK fighters in Asia), it has the following undesirable consequences:

• It leaves the Pearl Harbor fleet unmolested.
• It leaves Manchuria and Burma unguarded. Granted, these are two territories that are usually easy to take back because they are reachable from Japanese transports in one turn, but if Russia has stacked infantry in east Asia on turn 1 then it can take up to two turns to get Manchuria back.

I'm curious how others deal with this opening and if there are any recommendations on how to refine my response.