"Two heads are better than one, Zhuge Liang" means: it is a metaphor that many people are wise. Please discuss some things and you can come up with a good solution.

There is also a saying that "cobbler" is actually a homonym of "Bijiang", which means "lieutenant" in ancient times. The original intention is that the wisdom of the three assistants can top Zhuge Liang, and it is called "cobbler" among the people. Synonym is: many hands make light work, many hands make light work.