“Those who embezzled the money should die,” said one angry user on Weibo, China’s Twitter-like social media platform.
“Never trust those garbage charity organisations,” wrote another.
CCAFC did not respond to AFP’s requests for comment.
By Wednesday, a video about Wu’s malnutrition and death had garnered more than five million views.
In the video, Wu — thin and shrunken from malnourishment — is lying in a hospital bed.
The incident highlights how angry ordinary Chinese get when faced with any hint of misappropriation of funds, as the rich-poor divide widens in a country where corruption is pervasive at every level of society.
Past scandals have also fueled deep-seated suspicion of charities.
In 2011, the Red Cross Society of China found itself embroiled in corruption allegations, after a young Chinese woman with links to the organization flaunted her wealth online.
The anger around Wu’s case also comes as Chinese people donate an increasing amount of money to philanthropic organizations in the country.
In 2018, Chinese people donated over 3.17 billion Chinese yuan to online charity platforms, a 27 percent jump from the year prior, according to official news agency Xinhua.