Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
Coupon (1252.99 USD): Wholesale20
(CouponsFromChina.com tip: this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): X17BG7, 24BGXPRO, PCNETWORK, 10HWXB, 1B1G1LAP1, SPL1A1PMBX, 1B2GM1X3, 19BGM1X3, TECH8%, 10HWXBG
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Here is price history (for all/most countries) for HUAWEI MateBook X Pro 8/256GB i5-8250U MX150 Global Notebook.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).