Looks like this illustration from a military magazine.
I’m not sure how credible that post is. China puts a lot of effort in not just better equipment but also equipment with no direct counters, so developing something like a 6th gen early is not fully out of the question, but I don’t think China is advanced enough to get it into the air so quickly, while US is still getting F-35 in order and Russia is struggling with getting any 5th gens up at all. According to everything I’ve seen before, it’s still a stiff neck to neck competition.