Chinese academics allegedly reproduced magnetic effects of LK-99 (twitter.com)

This Medium post contains a nicely formatted summary of the Twitter threads.

“This time should be the real deal. Just got news that the physics institute managed to produce the sample and replicate its magnetizing qualities, but yet to see Meissner effect. I think the problem right now is the superconducting material’s purity is too low, only a few %, but if we have made a start this problem will be solved quickly.”

Afaik The Meissner effect is critical for a superconductor