东隅已逝，桑榆非晚

Explanation: East corner: To limit the source, that the early years. Sang Yu: refers to the sun at that old age. The early passage of time, if the treasure time, who had become in his later years is not too late. 　　Source: Tang Wang Bo, "Preface to King," although the North Sea on credit, spread upward which can be accessed; east corner is gone, Sang Yu Non late. "