Build the lane around the four-shot cycle

0:00–14:00, especially the first two waves, each reload cycle, and every crash-before-recall window

Start by identifying whether your duo can contest the level-two race. If you can push without entering the enemy's stronger all-in range, use Dancing Grenade through low-health minions and hold the fourth shot for a champion or valuable last hit. If the enemy has the stronger early engage, preserve health, take experience, and let the wave come toward you. Use Deadly Flourish when prior damage or ally contact can enable its root, not as a blind lane habit. Crash before recalling; a crash gives you a safer reset and lets the next wave return toward you. If ahead, deny space with a controlled wave and trap routes. If behind, prioritize safe CS and XP, accepting that Jhin's lane is won through repeatable setup rather than one forced duel.

Lane

Choose the reload window, not every trade

If the first two waves can be pushed without losing health to the enemy's stronger level-two threat, then pressure the wave and prepare to use Dancing Grenade on low-health minions, prioritizing a bounce that kills a target so the grenade gains damage before reaching the enemy champion. If the enemy reaches level two first or your support cannot contest the space, give up the last few minions rather than forcing a fourth-shot trade; regain control after the wave is under your turret.

With Jhin

• If Jhin is holding his fourth shot, help him create a safe last-hit or champion-hit window instead of starting a separate trade. If you can damage the same target first, your contact can enable Deadly Flourish's root; after it lands, layer crowd control while Jhin fires from range rather than forcing him to enter melee distance.
• If Jhin begins Curtain Call near an objective, protect the channel instead of abandoning the area for a chase. Stand between him and the likely diver, force enemies to move through his firing line, and disengage when the channel ends if no target is in execute range. His ultimate creates space even when it does not secure a kill.
• If your team is moving toward dragon, Baron, or a tower and Jhin has time to prepare, walk through the trapped route he wants to defend and keep the enemy in that zone. Crash the nearby wave first so the enemy must choose between catching farm and contesting. Give him a marked target and a clear angle; do not demand a blind engage from a champion whose value rises with setup.
• If Jhin is behind, offer protection and reliable damage rather than asking him to face-check or split into danger. Help him collect the safe wave, start fights only when he has a line for W or R, and treat a rooted target as the first conversion point. When ahead, let his wave pressure and long-range shots soften the enemy before committing to a 5v5.