一而二，二而三

Explanation: By a 1-2 from 2-3. Lenovo to open that getting from here to go to. 　　Source: Cao Xueqin, "Dream of Red Mansions," the 28th so a while back to two, two and three, repeatedly estimating the go, do not know at this time, why, etc. For an indulgence to relieve inaccessible not know, to escape a large build, Chu Chen network, can explain this sad. "