There is an idiom called "one, two masters"

1, one servant and two masters: one servant serves two masters, which means disloyalty, because one servant can usually serve only one master.

2, one guest does not commit two masters: one person bears all, or one person has been doing it.

3, a guest does not bother the two hosts: a guest does not have to bother the reception of the two hosts, which means that one thing is borne by one person and no need to ask others for help.