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) :
Asus ZenBook UX370 USB-C charger 45w / Asus ZenBook UX370 USB-C 45w charger / Asus ZenBook UX370 USB-C 45w ac adapter
USB-C TYPE-C to HDMI VGA USB 3.0 Charging Hub Adapter For ASUS ZenBook Pro 3 AU | eBay
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Asus ZenBook UX391 USB-C Laptop Charger - laptopchargers.ie
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How to Charge Your Laptop With USB-C: Your Questions Answered | PCMag
ASUS - #ZenBook 14 Ultralight supports USB-C® Easy Charge for ultrafast charging that is enabled by any PD (Power Delivery) certified charger. | Facebook
USB C Charger Cable, USB Type C to USB C Video Cable | uni
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Amazon.com: Yoamp Nylon Braided Female USB C Charge Cable for Asus 19v 3.42a 65w 4.0mm *1.35mm Tip, USB C to Right Angle Tip Adapter Charging Cable Cord Compatible for 200 X200C X200CA
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Asus ZenBook USB-C charger 45w / Asus USB-C 45w charger / Asus ZenBook USB-C 45w ac adapter
Asus ZenBook USB-C charger 100w / Asus ZenBook 100w USB-C ac adapter / Asus ZenBook 100w USB-C power cable
100W USB C to 4.0*1.35mm PD Charger Cable Power Cable For Asus Zenbook Vivobook 783914302483 | eBay
Usb C To 4.0x1.35 Mm Dc Power Adapter Connector Plug Usb Type C Charging Cable Cord For Asus Zenbook Ux21a Ux31a Ux32a Ux32vd - Pc Hardware Cables & Adapters - AliExpress