Если верить: samsung_firmware_langpacks_descriptions_02_2010, то нет китайского на данную модель. Вот список прошивок из samsung_firmware_langpacks_descriptions_02_2010:
C5212 [DuoS Light] I C5220
C5212CXID2/CXIG1 /CXIK1 POLAND (PLS), UK, ITALY, GERMANY, HUNGARY, FRANCE, CZECH
C5212DDIB4 INDIA, UK
C5212JPIC4 ARABIC
C5212JVIC1/JVIE3 TURKISH
C5212PMID1/PMID3/PMIG1/PMIL1 POLAND (PLAY), UK, ITALY, GERMANY, HUNGARY, FRANCE, CZECH
C5212SHIE2/SHIL1 CROATIA (TWO), BOSNIA (TEB)
C5212XAIB3/XAIB4/XAIC5/XAIC7/XAIK1 UK, FRANCE, GERMANY, ITALY, NETHERLANDS, PORTUGAL, SPAIN, TURKISH
C5212XBJA2 SWEDEN, NORWAY, UK
C5212XCIB3/XCIC2/XCIK1 PORTUGAL (TPH), UK
C5212XDIB3/XDIC2/XDIG1/XDIK1 UK, ITALY, GERMANY, POLAND, HUNGARY, CZECH, SLOVAKIA, FRANCE
C5212XEIA5/XEIA7/XEIB3/XEIB5 RUSSIA
C5212XEIC3/XEIC7/XEIG1/XEIK1 RUSSIA
C5212XFIB4/XFIC3/XFIK1/XFIL1 BULGARIA, SERBIA, ROMANIA, SLOVENIA, UK, BULGARIA, MONTENEGRO
C5220DVIB3 AUSTRALIA