Is it illegal to ride a bike in Xianyue Mountain Park in Xiamen?

Not illegal. Xiamen Shanhai Health Trail: You can't ride on Xianyue Mountain.

Xiamen Xianyue Mountain Park "Tianjie" is located on the ridge line of Xianyue Mountain, adjacent to the Tianzhu Rock Temple under construction in the west and the land temple on the northeast slope. Tianjie plot is about 48 meters long from north to south and 165 meters long from east to west, with a total land area of 12 143 square meters and a total construction area of 2777 square meters.

Xiamen Shanhai Health Trail is 23 kilometers long and runs through Xiamen Island from east to west. Xianyue Mountain is the core part of the health trail. It starts from Hemei Bridge near Xiamen No.6 Middle School and ends at Yuanshan Bridge, with a total length of 6 kilometers. Mainly forest trails, but mountain view, city view, lake view and sea view are equally indispensable. It can be described as one of the most essential sections of the health trail landscape.