猕猴骑土牛

Explanation: Upgrade the post of metaphor is very slow. 　　Source: "Three Kingdoms Wei Shu Chuan Deng Ai" drawing "World language" Jun, son of company name, a rare literary talent, so keep the post of clerks; soil monkey riding a cow, how too late. " Thesaurus:  Zhihouqi mound on a dike or dam