So why didn't Zhongli help the Yakshas when they were mad? Why is he only sending a drug to Xiao now? I have made a cross-referenced picture in Chinese and English (and I have also retranslated one sentence), and I have to point out that there are several terms in the——

——Chinese version that illustrate these issues adequately
about the first question：
业障：karma，A term derived from Buddhism. Refers to the sin karma that interferes with the proper fruit of practice. Karma cannot be eliminated by others, and you need to make up for it through—

—your own efforts. People believe that if you cannot pay off your karma in this life, you will suffer in your next life (such as not being able to reincarnate as a human).
The Chinese used to believe that human beings were superior to animals, so not being reincarnated as human—

—beings was a serious punishment.
Although these Yakshas fought to protect Liyue, they didn't mean anything wrong, but they did commit the crime of killing, which increased their karma. Zhongli cannot replace them to repay karma for them. Moreover, in ancient times, he also—

Moreover, in ancient times, he also committed the crime of killing for Liyue，he has his own karma to pay back.And 污染（contaminate），As far as I know, the gods in the game have no purification power.
For example, venti was unable to cleanse Dvalin of toxins from the abyss.

You（traveler）had the power, but you didn't come to liyue at that time.

About painkiller（连理镇心散）, I'm sure you all know that's a very wrong translation. In China, there is a saying that human nature is inherently evil. What you do when you are alive is to fight against your own inner evil. We called it（your inner evil） ‘心魔’

心魔 like karma, is something that no one else can conquer or repay for you. You need to overcome it yourself.Apparently after thousands of years of fighting, Xiao's demons are starting to affect him seriously. He was trapped by his own past, unable to stop fighting or free—

—free from his 心魔. The only thing zhongli can do for him is to send him 连理镇心散. I thought the concept of 心魔 had been recognized by you in some Wuxia/Xiuxian or other Chinese novels.
What is the evidence of xiao bing influenced by his 心魔？Xiao's mask will appear on his—

—face and he will turn his head painfully when you stand still in place for a while

and why zhongli does not send the 连理镇心散 himself？Because now in Liyue, no one knows that Zhongli is the God of Geo except Childe and you. If he shows up in front of Xiao, he will be recognized.

Then all the work he had done to make Liyue independent was in vain and he went back to his god's work. Poor grandpa, he just wants to not disturb anyone and retire quietly.

And why is it that he tells those one through dreams instead of just showing up to them in person.

@haloefn I hope I don't bother you.

Some people might say why does it have to be the Yakshas to do these things? Which is driving them to death. It's not like that.“在其位谋其政”、“侠之大者为国为民”When you are adepts or Yakshas, your power is for protecting the common people, when you can't protect them—

You're practically dead.
like the salt goddess, her gentleness and kindness were a mistake in the war years, she could not protect her people,so her people killed her finally.
To be a god, you have to do your own things. In Genshin, all gods、adepts、yakshas are related to humans

This is their inevitable mission.