No matter how stout one beam, it cannot support a house

Similar sayings:

A single beam cannot support a great house A single beam cannot support a great house
You can’t clap with one hand only You can’t clap with one hand only
The peony is beautiful, yet it is supported by a stalk The peony is beautiful, yet it is supported by a stalk
One monk shoulders water by himself; two can still share the labor among them When it comes to three, they have to go thirsty One monk shoulders water by himself; two can still share the labor among them When it comes to three, they have to go thirsty
Two good talkers are not worth one good listener Two good talkers are not worth one good listener

Chinese sayings and proverbs