隔山

隔山	gé shān	half-sibling relationship / brothers with different mother / step-
隔	gé	to separate / to partition / to stand or lie between / at a distance from / after or at an interval of
山	Shān	surname Shan
山	shān	mountain; hill (CL:座) / (coll.) small bundle of straw for silkworms to spin cocoons on