Forest Park Introduction: Longwantan Forest Park has 1,061 species of plant trees, including 712 species of medicinal value. It is the canyon with the most wild medicinal materials in southern Zhejiang, and is known as the "First Medicine King Valley in Southern Zhejiang". Due to the diversity of vegetation, every cubic meter of air here contains up to 60,000 negative oxygen ions, making it a place where you can take a deep breath.