Ethos and manners are practices which the laws have not instituted, or could not, or did not wish to.
One difference between the laws and the ethos is that the laws more determine the acts of the citizen, and the ethos more determines the acts of the man. One difference between the ethos and manners is that the first has more to do with inner conduct, the latter with exterior.
Sometimes, in a state, these things are conflated . Lycurgus made a single code for laws, ethos, and manners, and the legislators of China did likewise.
We must not be surprised if the legislators of Lacedæmon and China conflated laws, ethos and manners : it is because the ethos represents the laws, and manners represent the ethos.
The principal object of China’s legislators was to make their people live tranquilly ; they wanted men to respect each other deeply, for each to be aware at every moment that he owed much to others, and that there was no citizen who did not depend in some respect on another citizen. They therefore gave the most elaboration to the rules of civility.
Thus, among the Chinese peoples, villagers  observed ceremonies among themselves the way people of high rank did, a most appropriate means for inspiring gentleness, maintaining peace and good order among the people, and suppressing all the vices that emanate from an unforgiving spirit. Is a break with the rules of civility not indeed an attempt to accommodate one’s flaws more easily ?
Civility is in this respect better than politeness. Politeness flatters other people’s vices, and civility keeps us from manifesting our own ; it is a barrier that men put between them to avoid corrupting each other.
Lycurgus, whose institutions were unforgiving, did not have civility as his purpose when he fashioned manners ; his eyes were set on the warlike spirit he wanted to impart to his people. Men forever correcting, or forever corrected, who were forever instructing and forever instructed, equally simple and rigid, were exercising virtues amongst themselves rather than showing respect.