If India handled water resources the way China does, Pakistan wouldn't even be having this conversation. China has built massive dams on rivers flowing into other countries, often with zero consultation or concern for downstream effects. India, on the other hand, strictly follows the Indus Waters Treaty, a treaty that actually gives Pakistan more water than any other country in a cross-border agreement.
If India took a China-style approach, it could have unilaterally controlled, diverted, or dammed rivers without giving Pakistan a say. Instead, India abides by a treaty that has been in place for over six decades, despite repeated hostility from the other side. If anything, Pakistan should be grateful that India respects the IWT.