Based on literature research

it is concluded that the weight measurement of medicinal in ZHANG Zhong-jing’s formulas was only based on official system established in the Eastern Han Dynasty from several aspects as follows: there was no other measurement systems except the official system in the Eastern Han Dynasty and Wei and Jin Dynasties.It was incapable for medical practitioners in that period to create another measurement system.It was incapable for medical practitioners to have courage to use another measurement system different from the official system.The measurement of medicinal had powerful historical stability.There was only a little difference in the standard of measurement between the Eastern Han Dynasty and Western Han Dynasty.The official system was continue to be used in the Jin Dynasty

Sui Dynasty and Tang Dynasty.It is confirmed that one liang（两） in ZHANG Zhong-jing’s formulas weighed 13.8 grams of the official system in the Eastern Han Dynasty.