Whatever India can offer in solving Taliban problem, Chinese can do more. So, no, India can't ensure the regional stability for China.
INdia has ensured stability for herself with CHina, Pak and the Talibans Probing weakness everytime. I was talking on the lines of India's foreign diplomacy in the Middle east where INdia has ensured the saftey of its people and investments.
China has economic ambitions more than politics in the region and the players know it. This is the larger leverage which China is extending to factions.
No, the reason that this region is stuck in chaos is the big game of great powers: USA, Russia, China, Iran and Saudi Arab, etc.
Getting one more player won't solve the problem.
India is the principal player cuz KAshmir is INdia's own land. Getting more players into the equation by China and Pak (USA, SA, IRAN , RUSSIA) into the region wont solve it cuz its a skirmish Pak started on Indian Soil.
By the way..your Lead..XI visited our FOREIGN MINISTER..breaking usual protocol
Meaning, your Top knows the stability Indian can offer to the region than fanatic IRAN and SA where dynamics change after every coup or election planned by the USA with Pak blinding China.