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[[File:Moqiu.png|thumb=Moqiu-thumb.jpg|200px|right|The chessboard structure with the character "虬"]]
[[Moqiu]] (<ruby>''魔虬''<rp> (</rp><rt>mó qiú</rt><rp>)</rp></ruby>, English name: ''The Devil Dragon'') is a Ballance custom level created by ImbalanceDream, released on 1 July 2012. Just as ImbalanceDream's words, "''The way to passing this level is so difficult that even more difficult than going to the sky. Don't play it with a irritated mindset. I pay a high tribute to those who can pass this level.''", this custom map 's aim is testing your technique and it is so long that everyone feels exhausted during playing. So, these features make most of the Ballance players discouraged.

This map has 8 sections. Every sections needs to pay some time to think. The techniques, which this map will test for you, include riding ball, missing transformer, controlling wood/paper ball on monorails and etc. Moqiu is the map with middle-difficulty in all of the custom maps. If you are a beginner and you want to look throught roughly. Please check [https://www.youtube.com/watch?v=wXxlhX8b8L8 ImbalanceDream's video].

There are some many points which are benefit to learn by subsequent cartographer. For example, using [[turnstile]]s and prop stone ball to lift player, setting extra dead zone to avoid shortcut and massive chessboard structure to block player (In the upgraded version, the creator adds so many character "虬" here. This makes many games feel dizzy. Later, it became the symbol of this map).

[[File:VirtoolsMoqiu.png|thumb|200px|left|Glance at Moqiu in [[Virtools]]]]

Within a week after the release, Many Ballance players try to pass this level and some of them publish some personal insights after passing this level.

<i>
* If Ballance has 100 levels, this will be the 101st level. – [[User:STERD|sterd3]]
* This extraordinary map might shock the designers of Ballance.  – 周元龙周元龙
</i>

Later, Moqiu, Moneng Space and Double Path become the well-known maps in custom map field. And it is downloaded and played by countless beginners and speerunners.

ImbalanceDream uploaded a video about passing Moqiu with 1 life on Youtube, July 8, 2017. It earn 68265 viewer, 116 like and 41 comments (till July 2018). It might the most popular video about Ballance custom map after Moneng Spance's video. It's easy to see that almost Ballance players like this map. It is difficult to do for custom maps. It is also a shining point of Moqiu.