Oh you mean the combination of parachutes and retrorockets pioneered by the Soviet Union with their Mars 3 lander?
Your homework? Thank you for taking us to Mars.
Looks like its improved not needing the crane contraption and it seemed to hover for some time deciding exactly where to land.
The reason is that Perseverance is the size and weight of a small SUV (around 1,000 kg) whereas the Chinese lander seems to be only 240 kg, so 1/4 of the weight. That is likely the reason why they were able to land it directly, the way comparably heavy US rovers, Spirit and Opportunity, also landed.