好生看守 Guard The Master Well
八戒道：「又有甚商議？」行者道：「沒甚商議。你且在這裡用心保守師父，沙僧好生看守行李、馬匹。八戒道：「又有甚商议？」行者道：「没甚商议。你且在这里用心保守师父，沙僧好生看守行李、马匹。
逐句解 Line by line
Bajie said, "Is there something else to discuss?"
商議 is to confer, to take counsel. Bajie has noticed the change of posture before anybody else, which is what he tends to do.
Pilgrim said, "Nothing to discuss.
Seven characters of flat denial, immediately before eighty characters of detailed plan. The novel does not comment.
You stay here and take good care of the master; Sha Monk, keep a proper watch on the luggage and the horse.
看守 takes 看 as kān, to watch over or guard — a different word from the kàn of looking that the same character carries a few lines earlier. 好生 is properly, thoroughly, with care. He is assigning duties, which is what a person does before leaving.
The denial and the orders arrive in the same breath. Nothing to discuss, and here is what each of you is to do while I am gone.
The assignments are exact and they are the ones this trio always get. Bajie guards the master, Sha Monk guards the baggage, Pilgrim goes. Nobody argues about it because nobody ever does.
What is new is the care of it. Take good care, keep a proper watch — Pilgrim does not usually bother with the adverbs. He has spoken to Venus and he is behaving accordingly, whatever he tells his master.