As a dedicated Traveler in Teyvat, I've journeyed through countless lands, but the World Quests of Sumeru stand apart. They weave intricate, emotional tales that often rival the grandeur of the Archon Quests themselves. One such quest that left a profound impact on me is "Rejoice With Me, For What Was Lost Is Now Found." This quest is a poignant journey of friendship, betrayal, and restoration, centered on our companion Jeht and the mysterious, broken elemental device named Benben. The quest can be challenging, with its multi-step unlock process and cryptic location puzzles, but the reward—both narrative and practical—is immense. Let me guide you through this unforgettable adventure in the vast, sun-scorched sands of Hadramaveth.

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🔓 How to Unlock the Quest: A Path Through the Sands

Unlocking this quest is not a simple matter of walking up to an NPC. It requires dedication, as it's the culmination of a significant story arc involving our friend Jeht. Here is the precise sequence you must follow:

  1. Prerequisite: You must first unlock and have access to the entire Sumeru Desert region, including the formidable Desert of Hadramaveth.

  2. The First Step - Golden Slumber: Begin by completing the World Quest series "Golden Slumber." This quest introduces you to Jeht and her father, Jebrael, as you explore the ancient, sprawling ruins beneath the desert sands. This adventure sets the stage for everything that follows.

  3. The Crucial Follow-Up - Dirge of Bilqis: Upon finishing "Golden Slumber," a new, extensive quest chain called "Dirge of Bilqis" will become available. Jeht invites you to the Tanit Camps. This questline is emotionally charged and critical for understanding Jeht's current state. You must complete all six parts of the "Dirge of Bilqis" quest. During this story, Jeht faces a devastating betrayal from someone she considered family, which directly leads into our target quest.

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🏜️ Initiating the Quest and Finding the First Clue

After the trials of the Dirge of Bilqis, speak with Jeht at the Tanit Camp. She is melancholic, reflecting on her future after the betrayal. She reveals she prevented the Tanit from clearing out the tent of Aderfi, the very person who betrayed her, because Benben—the little mechanical companion we saw earlier—is still there, broken and suffering on the ground.

Your first objective is clear:

  • Travel to Aderfi's tent, the place where you first met him.

  • Inside, you'll find Benben lying inert. Jeht recalls that Aderfi was researching ways to repair it.

  • Search the tent for clues. You'll find many interactable objects, primarily books smuggled from the Sumeru Akademiya. Among them, a specific note reveals Aderfi's plan: he was attempting to trade with the Fatui for special components called "Energy Transformation Capacitors" to fix Benben.

Paimon and I decided we would track down these Fatui and secure the parts ourselves, allowing Jeht to stay and watch over Benben. The game then provides you with a parchment map—a small, vague drawing you must decipher.

🗺️ Deciphering the Map and Locating the Fatui

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This is where many travelers get stuck. The parchment points to a specific meeting spot. Here’s how to find it:

Step Action Detail
1 Teleport Use the Teleport Waypoint located east of the Dunes of Steel. It's the one shown in the image above.
2 Navigate From the Waypoint, head directly north.
3 Identify Look for the area marked by a circular rock formation on the map (and in the provided image). As you approach, your camera will automatically pan to reveal a small Fatui outpost.

When you arrive, the camp will be empty. Simply take a seat on one of the crates and wait. Soon, a Fatui Electro Cicin Mage and a Hydrogunner Legionnaire will arrive. Attempting to talk to them peacefully proves futile (as expected with the Fatui), leading to a confrontation. Defeat them. Upon their defeat, the Hydrogunner will divulge information about their main camp to the north, which holds the Capacitors you need.

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⚡ Storming the Northern Camp and Retrieving the Capacitors

A blue quest marker will appear far to the north. Be warned: there is no nearby Teleport Waypoint. Prepare for a long run or use alternate mobility options. More importantly, ensure your party is ready for a serious fight; this camp is heavily guarded.

Recommended Party Setup:

  • A strong shield character (e.g., Zhongli, Noelle) 🛡️

  • Elemental reactions to break Fatui shields (Cryo for Electrohammer, Electro for Hydrogunner) ⚡❄️🔥

  • A reliable healer or self-sustaining DPS.

Camp Assault Strategy:

  1. First Wave: At the camp entrance, you'll face a Fatui Pyro Agent and an Electro Cicin Mage. Focus on them quickly.

  2. Second Wave: After breaching the entrance, head into the main camp area. Here, you'll battle another Pyro Agent, two Ruin Drake-like Sumpter Beasts, and a Pyro Skirmisher. Prioritize the Agents and Skirmisher, as the Beasts are slower.

  3. Loot the Key: From the defeated Hydrogunner at the first camp, you should have obtained a Key. Use this key to unlock a large cage door within the main camp.

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🔋 Finding the Energy Transformation Capacitors

Inside the caged area, the search for the three Energy Transformation Capacitors begins. They are well hidden!

  • Capacitor #1: Directly ahead, you'll see a yellow investigation sparkle. It's blocked by a pile of wooden crates. Simply destroy the crates (a few sword swings or any attack will do) and investigate the spot to collect the first capacitor.

  • Capacitor #2 & #3: Deeper in the area, you'll find the other two capacitors on your left and right. However, each is guarded by a small, aggressive Sand Serpent. Defeat these creatures to safely claim the components.

🎉 The Emotional Conclusion

With all three Energy Transformation Capacitors in hand, return triumphantly to Jeht at her tent. In a beautiful, silent moment, Benben stirs. It floats into the air, draws the energy from the capacitors, and whirrs back to life, its cheerful beeps filling the tent. The joy on Jeht's face is palpable. Though she is still grieving and uncertain of her future, having Benben restored is a small but significant light in the darkness. With Benben now actively following your party, the quest "Rejoice With Me, For What Was Lost Is Now Found" concludes, leaving you with a powerful story of loyalty and the bittersweet task of mending what was broken, both in machines and in hearts. This quest, as of 2026, remains a standout example of Genshin Impact's superb world-building and character-driven storytelling in the Sumeru region.