I can surely claim that the quality of force fed opium was damn good.
And that many of the Hans are real locusts as their own kind calls them. And easily brainwashed.
That's why they can be made to run after the four pests banging drums and pots and pans in their hundreds of millions, scraped off in the womb, salute passing cars and so on.
And of course the forced single kid policy has played havoc...
Their history is a history of civil wars for 2500 years punctuated by occupation by non Hans.
The zombi mulato (whose kids as per his own admission are going to be the very original definition of mongrel mulatos) can only think of being programed.
They can't think beyond that.
You lack basic knowledge of history.
All this happened much later, they started their career with the Chin when they were nothing more than a bunch of tribals with an overall population of probably hundred thousand or so. They had probably no more than 60,000 soldiers (pretty much every tribal kid or man over 12 years old).
They still literally toyed with the Han armies, destroying them at will and having fun doing it. Most of the Han armies couldn't really give any fight with the generals running away from the field and the Mongols chasing down and killing the last running "soldiers" at leisure, picking them one by one.
Every Chin city had more population than all the Mongols in the world. The Hans were 100 million or more at this time.
They used the resources and techniques from occupied China (including Chin soldiers) to occupy the rest of the places.
And the Chin Song king of the time was happy to let the Mongols first fight the other Han king as they were both enemies fighting each other and there was "no danger to him'.
Jin was in the hands of a new leader, Prince Wei, who complacently told the Tangut ruler: 'It is to our advantage when our enemies fight, Wherein lies the danger to us?
So one set of Hans was an enemy to the other. There was no one country.
It backfired really bad.
Let's not put the cart before the horse.