You can go to Li Village, Houzhai Street, Yiwu City (all map apps can be navigated).

As a kind of weeds, Qingming grass has high medicinal value. Qingming grass has the functions of lowering blood pressure, relieving cough and resolving phlegm, nourishing yin and benefiting qi, quenching thirst and relieving summer heat, cooling blood and detoxicating, sterilizing and diminishing inflammation. Oral administration can treat qi and blood deficiency, sore throat, dry cough and hematemesis, and external application can treat snake venom, which is beneficial to herbs.