https://thehill.com/homenews/house/3921082-house-unanimously...> “Their economy size is second only to that of the United States. [The] United States is treated as a developed country, so should PRC,” Kim said. “And is also treated as a high-income country in treaties and international organizations, so China should also be treated as a developed country.”
And CCP also usually paints PRC superior to US in everything so it's kind of their choice too...