A method of forming a semiconductor device includes providing a substrate for the semiconductor device. The cooling pipe joint is provided with a base part, a fastening member which is fastened to the base part, a deforming member which is arranged between the base part and the fastening member, and a first slanted surface which slants with respect to a center axis. The piston member is driven toward the flange in reaction to initiation of sudden extension of the strut, thereby restricting the piston passages and the flow of hydraulic fluid therethrough. , which forms a social network, and produces a contents flow between mobile terminals, thereby creating a new business model such as contents resale, promotion, etc.