We rarely hear about the monk Hong Zhuan. He was described as a master of staff and spear in Exposition of Original Shaolin Staff Fighting from the late Ming Dynasty.
What makes him most interesting is that he is the only monk of Shaolin to record Shaolin's method of martial arts from the Ming Dynasty.

I have been translating the preface to his work and come across a term I can not define which is 為俞為將

Here is the translation

Shaolin’s staff method is a divine transmission known since the ancient past. Through my small experience of it I have realized that it is as high above me as tall mountains and as profound as deep seas. You can truly call it an ultimate achievement yet what I have learned is like a twig’s leaf from a great tree. 為俞為將 to learn takes all one’s undivided attention.

If anyone can help with a clue I much appreciate it.

Here is the original Chinese of the above paragraph
少林棍法，出自神授，名重古今，余颇染指焉。山高海深，诚称绝业，得其一枝片叶，为俞为将，犹足以专门一时 ，复何间然

Here is the original from a website 梦绿堂枪法

Here is an article I wrote on the subject of Monk Hong Zhuan's Spear
Secret Spear of Shaolin

Kevin