If the native options aren't granular enough for you, many enthusiasts turn to the Legion Fan Control utility. This is a lightweight, third-party tool specifically designed for Legion hardware. Using LFC, you can:
Maxes out fan speeds and pushes the CPU/GPU to their limits. This is ideal for heavy gaming or rendering but will be the loudest.
Caps performance and lowers fan RPM to ensure the laptop stays as silent as possible. This is perfect for browsing or office work. Advanced Customization via Lenovo Vantage
Avoid gaming on soft surfaces like beds or couches, which can choke the intake and cause immediate overheating.
Unlock higher fan RPMs than what Lenovo’s stock "Performance Mode" typically allows, which can help significantly with thermal throttling during marathon sessions. Maintaining Your Cooling System