How to complete the "Seize the Storm" quest in Genshin Impact 2.1

Where to find the Sangus Pearl in Genshin Impact 2.1: exact location and material gathering points.

How to get Eula and the weapon "Predator" in Genshin Impact 2.1: Why isn't Eula coming in the mail?

Where to find the rest of the Electro Slimes on the new islands in Genshin Impact 2.1?

Where to find Cloud Retainer Fruit in Genshin Impact 2.1: exact location and material gathering points.

? Bug with captcha in Genshin Impact 2.1 on PC: the picture won't load, how to solve the problem?

Complete the Legends of Koko quest "Warriors' Dreams are Like Spring Grass" in Genshin Impact 2.1.

Complete the Legends of Seagull Ryder "Reflections on Transience" quest in Genshin Impact 2.1.