This set is in 1/700 scale. The individual Guided Missiles should be cut from the sprue at the base of the missile behind the fins. The main fins are deployed so the missile should be used as part of another model kit, like a ship, building or bridge.
According to Wikipedia: "This is the original Chinese version of Soviet P-15 Termit missile, and the first was SY-1, produced at Factory 320 (the Nanchang Aircraft Factory); Chinese sources identify the designers as Li Tongli and Lu Lin. The main difference between P-15 Termit and SY-1 missiles is that the unreliable aneroid altimeter of P-15 Termit was replaced by a much more reliable radar altimeter in SY-1. The successor of SY-1, designed by Peng Lisheng and designated as SY-1A, had a mono-pulse terminal guidance radar seeker replacing the original conical scanning radar seeker. The missile received a NATO reporting name CSS-N-1 Scrubbrush."