Found a nice solution to charge my laptop with a USB-C charger even though its USB-C doesn't support charging. Minus 0.75 kg from the luggage weight, score! (more in the comments) :
100W USB-C to 4.0*1.35mm PD Charger Cable Power Cable For Asus Zenbook Vivobook 783914302483 | eBay
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Laptop Charger Adapter Type C USB-C for Asus ZENBOOK 3 UX390UA Series 65W | eBay
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