Details on capital gain

Experts,

I have a question regarding capital gain.

we are selling ancestral property, my grandfather’s property. He has 6 sons/daughters. My father is the eldest of all and he is no more. We are 3 kids (I have one brother and sister). As per my previous question on this forum, I am eligible for my share (1/24^th part of the total amount).

My question now is on the capital gain. Is this capital gain for me? If yes, how can I escape the capital gain tax? What I heard is I have to invest this money on property again to avoid taxes.

Please advise me on what I should do to avoid capital gain tax.

Thanks