First time I heard that.  Please, make sure that when you do find out, you come back here and let us know how !.

I bought a car in China last year.  To get the vehicle license and license plate, you will have to pay the relevant taxes first (paid in person at the local tax bureau).  Good luck trying to convince them your working visa has magical anti-tax properties...

Back in the day, foreigners were allowed to import one car from abroad for personal use.  Even then, I'm not sure you could (legally) avoid paying some kind of import tax or customs duty.  Supposedly this method was still cheaper than buying the same car in China.  They've since done away with this loophole.

just student studying abroad to buy a car without taxesPurchase conditions Registered in the foreign regular University (College) to study Bi (junction) industry or further studies (including study abroad, cooperative research) period of more than one year. (2) within two years after the completion of their studies to return home. (3) After graduating from the first entry does not exceed one year. (4) To buy duty-free vehicle count a tax-free index (in a foreign country for 180 days stay there is a tax-free index), half-way to return more than a month out time can be calculated continuously. (5) the initial purchase of duty-free vehicles. tax-free margin (1) When the car removed the key pieces or complete sets of parts of the domestic car import tariffs, VAT and special consumption tax. (2) On license exempt from vehicle purchase surcharge (10%) of the purchase price.