Then in turn, the in-laws invite the host to sit down, and then the in-laws invite the hostess to sit down on the left and right sides of the host invited by the in-laws.
Then in turn, let the in-laws sit on the right hand seat of the host of the in-laws inviter, which is convenient for conversation and toast at the dinner table. That is, the host sits in the main seat, the hostess sits in the deputy position, and the in-laws sit in the host's right hand seat, which is also convenient for clinking glasses on the wine table.
Extended data:
After the first in-laws dinner, one of them will ask for the next invitation, such as when to have dinner together next time, where to play together next time, or have afternoon tea together another day.
If there are really no other arrangements, there is no need to invite the next time and place. Come to think of it, it's ok to invite them together. If you don't have time and good ideas, then you will be untenable.
In-laws will say goodbye politely at the end of their first meal, which is also a good example for children. After all, it is the first time to have dinner together, and we are not particularly familiar with each other. Politeness should still be in place.