he's probably referring to this https://thenextrecession.wordpress.com/2023/08/02/china-consumption-or-investment/
tldr chinas quarterly growth has slowed and liberal economists are claiming china's miracle is over. private sector investment has shrank 0.2% for the first time since data collection in 2005 but investment by state firms has expanded 8.1% in the same period. there's also a current global manufacturing recession. doesnt mean "its over" or whatever tf they're saying but interesting to note.