What words do you want to use further on the original basis (fill in the eight-character idiom)

A hundred feet of pole head, further Buddhist language, although the metaphor is deep, still need to practice and improve. Metaphor has reached a high level, but it is still not satisfied, and further efforts are needed.

The top of a mast or acrobatic pole. Metaphor is extremely high official position and fame, or high achievements in study and career.