Per Coachella's Reddit Page, it looks like Zhu may be one of (or the) big surprise at Coachella's Do Lab for Coachella 2018. The above picture was posted on Zhu's instagram for a brief time before it was taken down. As you see it lists a bunch of places Zhu will be playing, and has Coachella crossed off on the list. Zhu, notably, is not on the Coachella 2018 poster, meanining this would be a surprise set. If you are new to Coachella the Do Lab is famous for surprise guests, such as Diplo, Skrillex and others. Now that Zhu has posted this a lot of people are thinking Zhu will be the big surprise guest for the Do Lab 2018.
So how do you know when Zhu, or any other big surprises, will be on stage at the Do Lab for Coachella 2018? Generally when the Do Lab releases a schedule, there are some slots for surprise guest. See the above Do Lab schedule for reference (this is from Coachella 2016). As you can see there are designated slots for surprise guests, so there is a chance it could be in one of these slots. Asides from this the best way is to check social media or the Coachella Reddit, as people will post about it and you can rush over to it. That's it for now, stay tuned for more Coachella and Do Lab 2018 rumors!