"Simulation Sex Toy" piston movement: that penis twitch back and forth around the vagina, women in general are interested in low-frequency twitch, it inspires excitement, and high-speed twitch easy to drive the couple into the orgasm. Chinese Sui and Tang Dynasties "Jade room secrets" stated a brief outline of the technique, summarized in four sentences total 16 words, that "nine shallow a depth, third from left and right three, leeches landing, eel stranded" was actually speaking a piston movement, Chun Li shower to behave. Meaning "Simulation Sex Toy" is around twitch, first pumping light at nine under, and then inserted deep look forward, and then around the vaginal wall friction three times each twitch, twitch and then up and down rhythmically, like eel was in shallow water spiral wriggles. This action allows the couple to get great pleasure in sex. "Simulation Sex Toy" skills to promote orgasm: marital sexual arousal orgasm is the apex, is the peak experience of spouses of communication, is a realm beyond self-consciousness, it is in the life of the couple hope to achieve orgasm. How to enjoy orgasm happiness?