What's the Burn Event mean? Seems it is different with Uniswap

[TangMonk]

For example, this tx, the man remove liquidity and Burn Event triggered

But what's the value and index mean?

In Uniswap V2 pool, Burn Event contains amount0 and amount1 for token1 and token2 removed amount, But I do not know what exactly is the value and index mean?

I cannot found the doc about that