Dasungezhuang in Shunyi District, Nancai Town in Shunyi District, Gaoliying Town in Shunyi District and Wanmu Orchard Base in Beiwu Town in Shunyi District.

It should be noted that forsythia suspensa is a kind of Chinese herbal medicine, which needs to be harvested safely to avoid eating by mistake or touching other harmful plants. At the same time, after harvesting, it should be properly preserved to avoid moisture or direct sunlight, so as not to affect the quality of medicinal materials.