Sure, here's a brief introduction to Longyan in English:

Longyan is a prefecture-level city located in the southeastern part of Fujian Province, China. It is known for its beautiful natural scenery, including mountains, rivers, and lush forests.

Longyan is also home to a number of historical and cultural sites, such as the ancient city of Changle, which dates back more than 1,000 years. The city has a well-preserved ancient city wall and a number of historical relics.

In addition to its natural beauty and cultural heritage, Longyan is also known for its delicious cuisine. Some of the local specialties include Hakka cuisine, bamboo shoots, and tea.