3-4 point distant very high approach

Distant very high approach  

This looks more like a light reducing play than a corner approach; and indeed has been used in that way in Chinese opening

It is occasionally used as an approach; in a celebrated game 1986-05-15 Takemiya played it against Yamashiro Hiroshi in the first game of the Honinbo match. Black normally answers at a or b.

Charles Matthews