Most Xin's play Jungle Xin. Jungle Xin doesn't work because
A.He's slow unless he spams abilities. spamming makes him blue dependent. This is a bad thing. The people who rule the jungle nowadays are AOE clearers who can keep up in levels and CS(Udyr Nocturne Mundo Lee Sin) or support junglers who transition well(Maokai Nautilus)
B.So easily kited. His slow is negligible at early levels. Getting all 3 hits of Q off without getting CC'd is nearly impossible. Early levels is all Xin has in the jungle. See the problem.
C. Xin needs farm. Alot of farm. The reason Irelia can dive teams and escape is because Triforce at 20 minutes in is friggin strong. As is Wit's End+Warden's Mail. Give Xin these items at 18-20 minutes and he's going to blow people up, too.
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Realo won gold at the Sex Olympics with a BROKEN FRIGGIN NECK.-Voltch