Tomb of the Sea (2018)

Ordinary high school student, Li Cu, gets attacked by a crazy man, becomes marked with a tattoo carving, and ultimately gets kidnapped by Wu Xie and his companions to accompany them to a No Man's Land in order to find the ancient and forbidden tomb, Gutong Jing. Upon his solo return and amidst a turn of events, Li Cu once again sets off to return to Gutong Jing with Su Wan, Yang Hao, and Liang Wan to unravel the mysteries involving Wu Xie, the Mystic Nine, the 10th Wang family and Gutong Jing. (Source: DramaWiki)