an acupuncture point (SJ-9) located on the Triple Burner (Sanjiao) meridian

按摩四渎穴有助于缓解前臂疼痛。

the four major rivers of ancient China, consisting of the Yangtze, Yellow, Huai, and Ji rivers

中国古代称长江、黄河、淮河、济水为四渎。