Table 1.

Summary of sample origin.

Sample	Origin	Sample	Origin
S1	Anhui, China	S7	Shandong, China
S2	Hebei, China	S8	Shanxi, China
S3	Henan, China	S9	Zhejiang, China
S4	Hubei, China	S10	Hunan, China
S5	Jiangsu, China	S11	Liaonig, China
S6	Jiangxi, China

The source of the above-mentioned eleven batches of Chinese medicinal herbs has been authenticated by Wang Kun, the vice president of Ningxia Institute for Drug Control, confirming their origin to be genuine.