Many Indians outright roasted Lavrov underneath that Tweet because of the Sino-Indian border dispute.
Looks like those south of the Himalayas (whom for most cases I have seen online are rather over-nationalistic than people of other nationalities) would rather go ballistic against China in order to justify their imperial claims made by their former imperial master, rather than to sit down and properly negotiate with China in order to find a common ground.
And that's not all - they desire a destroyed and disintegrated China by conducting a series of wars against China, such as actively supporting Tibetan and Taiwan separatism, smearing and defacing China using mass media, and hooking up with the Western neocolonial powers in order to fulfill their dreams for a ridiculous and outrageous Akhand Bharat.
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Unfortuntely, in that case, it would be better for China to prepare enough nuclear warheads to deal with both of them - One for the country who caused and started the problem 100+ years ago, another for the country who is actively fanning the problem today.