Genshin Impact's Big Business quest asks players to locate three lost invoices for Landa at Wangshu Inn in Liyue. Fans will not be able to obtain these invoices in Genshin Impact straightaway, though, as one of them is locked behind a secondary task given by an NPC named Bao’er. This task sends players to track down three Noctilucous Jade, and some fans may find this item to be quite elusive.
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Updated July 5, 2021 by Mina Smith: In order to make this article a little more reader-friendly, it has been updated with even more information on the locations to buy and find the rare blue stone called Noctilucous Jade. Maps have been added detailing additional places to find these blue glowing stones as well as a map to and picture of the NPC that sells them. This way, players can more easily find their way to great sources of Noctilucous Jade. This article has also been updated with new information that has been found in more recent updates of Genshin Impact.
There are two primary methods for getting Noctilucous Jade in Genshin Impact, and it is perfectly fine to use either one of them in order to advance the Big Business quest. Perhaps the easiest of the two methods is to simply purchase the Jade from Shitou in the Liyue Harbor. This NPC can be found in the same area as the restaurant and blacksmith, and indeed they have Noctilucous Jade for sale at a rate of 1,000 Mora per stone.
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That said, players that would like to save their Mora can collect Noctilucous Jade from Genshin Impact's open world, and there are a variety of locations where it can be found. One place where it is extremely common to see this mineral is in and around the mines in the Mingyun Village area, which is located just east of the Wangshu Inn where the Big Business quest began. For full clarity, here is a map highlighting exactly where fans can go to find the Noctilucous Jade that they need:
After arriving at this location, Genshin Impact players should be on the lookout for shimmering ores that are blue in color. Indeed, these are the Noctilucous Jade, and fans simply need to break three of them to fulfill Bao'er's request and earn one of the invoices for Landa. Notably, breaking these minerals free can be a somewhat time-consuming endeavor, and it is recommended that players that wish to expedite the process turn to a greatsword or explosives if they have them available.
There are many other locations for Noctilucous Jade on the map if players do not find enough for their needs in Mingyun. Here is a map with all the known locations of Noctilucous Jade.
To close, it is worth mentioning that Noctilucous Jade is not only used in the Big Business quest, as it is also needed for Beidou's Character Ascension. As such, players that are utilizing this claymore-wielding Genshin Impact character may want to stock up on the material while they are working on Big Business. This will assure that they have some Noctilucous Jade on hand when they need it, preventing them from having to return to the sources that are detailed in this guide.
Genshin Impact is available now on Mobile, PC, PS4, and PS5, and later on Switch.
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Source: MapGenie