What I know about the northeast customs is as follows (the so-called ten-mile difference is a basic custom, and it is not generalized):

Three yen grave: the third day of burial.

Need to prepare: offerings, incense, burning paper, ingots, coins, etc.

The seventh day after his death.

What needs to be prepared: burn a paper ladder under the chimney or smoke hood at night, put a bowl of clear water next to it, burn paper at the intersection, and pour the bowl of clear water at the door in the morning to block the door.

Sanqi: The 21st day of death.

Need to prepare: offerings, incense, burning paper, ingots, coins, etc.

May 7th: Thirty-fifth day after death.

Need to prepare: offerings, girls buy 5 pots of flowers (five or seven), incense, burning paper, gold ingots, gold bars, cash cows, cornucopia, villas, Jinshan, Yinshan, vaults, vaults, refrigerators, televisions, washing machines, air conditioners, cars, computers, mobile phones and so on.

Hundred days: one hundred days less, one day less.

Need to prepare: offerings, incense, burning paper, ingots, gold bars, mingbi, step by step promotion, etc.

Memorial Day: Long memorial day, one more day according to the lunar calendar.

Need to prepare: offerings, incense, burning paper, ingots, coins, etc.