Last time had both Su Bingtian and Xie Zhenye. Now China has only an older Xie Zhenye and three new guys. Last time was placing too much expectation so wonder the new team couldn't accomplish it. Deep down I'm disappointed but realistically I should have known better since Su is an anomaly. Someone like Xie was always just second best.US choked in men's 4x100m. Interestingly China was the only team that did not finish ahead of the US, despite four perfect hand offs. Even Japan beat the US.
What China need is a continuous program to produce young sprinters regularly with strong potential.