I don't think China has to veto India's request for UNSC seat blindly. Instead, China should respect and listen to the opinions first from around the world, especially from Indian neighbors who are naturally deemed to know best of India.
Lets start with Pakistan on the west: India? A belligerent bully. Never!
Maybe it is a wrong side, lets ask east side.
Burma: India for UNSC? r u kidding? A covetous bully having ambition on our land. No!
Bangladesh: India? ehhhhhuhhhh, No! India has stolen our water supply and instigated insurgency in our country.
Well, maybe we should look to the south.
Sri Lanka: India? A notorious lousy bully who had dirty hands in our national stability. No!
hmmmm, India may have some help from the north.
Nepal: India. An overbearing bully who has played notorious role in our civil war. No!
Now the verdict: NNNNNNNNNOOOOOOOOOOOO for india