May to June is the best time to harvest bracken every year. At this time, the bracken is fresh and tender, and the leaflets are not fully opened. Pteridium aquilinum is a Chinese herbal medicine and the rhizome of Pteridium aquilinum. Harvest in autumn and winter, wash, cut into sections and dry. Its main function is to relieve sore poison.

Wang Long is located in the south of Zhang Cun Town, Anji County, Huzhou City, Zhejiang Province. It is the junction mountain of Anji, Lin 'an and Ningguo provinces. It is the highest peak in the Yangtze River Delta in northern Zhejiang and eastern China, and is known as "the first peak in Tianmu Mountain". The main peak of Wang Long1587.4m is the highest peak in Anji County, Huzhou City and Ningguo City of Anhui Province.