Why didn't other nations help China during its Great Famine?

They probably talked around the death and severity.

"The harvest has not been able to meet the needs of the people."

And they definitely didn't talk about how it was his decisions that resulted in the famine, if they understood the big picture is probably questionable.

He also ordered many from the fields to factories and mines. Reducing the number of people farming in a misguided effort to industrialize imitating Stalin. Ordered sparrows to be killed because they stole grain. Leading to a boom in the locust population causing a plague. Heard somewhere that soil volume was important to food production. And being the supreme leader and less then a novice in the subject matter. Ordered those that remain farming against their objections under penalty of death. To till glass and other junk into their fields to increase the volume of the soil. Making the soil useless and infertile for a long time.

This is why all centralized authoritarian style governments are deadly. Whether it's Hitler Stalin Lenin or Mao. Theoretically if we had a wise and benevolent leader. It would be the most effective and beneficial form of government you can have. The problem is with wise and benevolent leaders. It's often more perception than reality. And simply an outcome of the environment they find themselves in. And even then they still tended to be the exception and not the rule.

I learned the other day that Madagascar had a famine in 2021??? I had no idea.