I found a few definitions:
A WWII AVIATION SLANGUAGE page at
http://www.303rdbga.com/slanguage.html
says it is a landing with "One Wing Low."
"Selected National/Ethnic Stereotype Expressions" at
http://www.uta.fi/FAST/US8/PC/estereo.html
says: "Chinese landing -- clumsy or disastrous, cf mythical pilot Won Wing Low"
Destroyers Online glossary
http://www.plateau.net/usndd/glossary/c.html
says: "Chinese landing -- When a boat is brought along-side a ship "bow to stern" rather than the accepted (traditional?)"bow to bow"."
I was going to guess that it was a landing made solely in order to swap pilots between front and back seats, a "Chinese fire drill" being when a car stops at a red light, the doors open, and occupants run around the car in order to switch seats before the light turns green.
There is also a place called Chinese Landing in Guyana, South America, which, being on a river, is probably the place where some Chinese explorers pulled their boat ashore.
It looks like the first one would be what an instructor wanted to correct. To answer the question:
* point out that the cowling is sloped, so lining it up with the horizon will drop a wing
* have the student practice straight and level in the landing attitude in slow flight * talk them through a few, with a long final so they can set up well, jumping on them the moment a wing started to drop
* show them a picture of a 747 scraping a pod (so they can see why it might matter)
* ensure they are trimming well so that they are not holding pressure on the yoke on final (if they are, by the time they get to the flare the arm is tired and it drops, dropping the left wing).
[This message has been edited by Luftwaffle (edited 13 February 2001).]