The Mind Only School.
Two Variants of this Chinese Thought
One says that everything is "out there" but the knowing of it is entirely in the mind.
The other says that every thing is mind made & that that there is nothing "out there" at all.
LuangPow Pa~n~navadho often said he felt that the second School had the better view for development of the Path. Though, the best view of all could well be a hybrid of the two:
The physical world is "out there" and some of the mental world too, whilst the remainder of the mental world is generated internally. But it is all mind known & mind interpreted: so that for all practical purposes the second School does in fact have the better view for Path cultivation.