According to a post by Yicai Global on social networking site Twitter, it seems that Apple confused the dollar and the yuan to pay developers in China. And thanks to that, these programmers received an amount 7 times higher than the actual income they earned in July.
Due to the US-China trade war, the renminbi was devalued and down to 1 USD for 7 yuan. For some reason, instead of sending money in Chinese yuan to developers in China, Apple sent the same amount but in US dollars.
Therefore, the income of these developers suddenly increased by 7 times. After a lot of reports about this confusion, Apple has not made any move yet.
Some humorous comments suggest that Apple wants to reward developers on the occasion of the upcoming Mid-Autumn Festival. Others argue that the confusion doesn't matter too much, because Apple still has billions of dollars in cash.
However, developers with this "benefit" are quite cautious, they did not dare to spend the money that Apple sent wrongly because they thought that might be withdrawn. The programmers also do not disclose what their income is.