Convert from picogram to liang [China]

Unit Definition (picogram)
The picogram is a metric unit of mass equal to 10E-12 gram or one millionth of a microgram.

Unit Definition (liang [China])
The liang is a traditional Chinese weight unit. During the European colonial period the liang was equal to 1/16 catty, 1/12 pound, or about 37.8 grams; this made it the same as a tael. In modern China, the liang equals 1/10 jin or 10 qian; this is exactly 50 grams (1.7637 ounces).