A fresh selloff in Treasuries has pushed the yield gap between US and Chinese 10-year bonds back toward an all-time high, raising the risk of capital outflow from the Asian nation. The benchmark 10-year Treasury yield inched as high as 4.81% in Asian trading on Wednesday, its highest level in nearly three years, while Chinese yields of a similar tenor held steady at 1.69%. That widened the yield spread between the two nations to 312 basis points, approaching the record high of roughly 315 basis points set early last year, according to Bloomberg data dating back to 2002.