1. The main cause of this conflict is because India intruded China's perception of LAC line at Galwan ValleyLol satellite images show any territory China "gained" is now vacated
I am afraid you cannot capture territory while retreating at the same time.
China was forced to except a buffer zone in territory it occupied and patrolled. That is exactly what india wanted to acheive. As a result, Status quo ante restored with the bonus of India securing its strategic infrastructure in Depsang and Galwan.
2. Some of China's PLA soldiers were martyred, China got its revenge and many more India soldiers were killed, and as a bonus punishment China moved forward to finger 4 at Pangong Tso and threatened more India's territory if India doesn't behave.
3. Since China already achieved its objective at Galwan Valley, stopping India's intruders, now moving back from finger 4 is reasonable. China move back from forward position and India now can not even go beyond finger 3, it is a fait accompli that India lost the territory, India accept to respect the China perception of LAC line.
From the current conflict:
What China gain:
- India is humiliated by needed to respect China's perception of LAC line, India can not enforce its claim to take back its claimed territory
- The world now know that India mostly consist of fake news propaganda media
What China lost:
- 4 martyr and few injured soldiers
Hopefully this will create a long lasting buffer area that follow China's perception of LAC line. China secure its border once for all with India around this area.