Border Town tells us a lot about the local customs of Xiangxi. Please elaborate on two ways in which Grandpa proposed to Cui Cui in the novel.

One is Tao (Father) and the other is Tao (Lord).

Grandpa's exact words are like this:

"There are rules in playing chess, the car is the road, the horse is the road, and each has its own way. If the old man took the road, he should have an old father as the background and invited the matchmaker to talk to me seriously. If he takes this road, he should make his own decision, stand on the high cliff of the ferry and sing songs for Cui Cui for three years and six months. "