I couldn't find anything online about China supporting Ukrainian farmers with tractors, but I did find:
Video: Ukrainians using tractors to haul away Russian missile systems
https://americanmilitarynews.com/2022/03/video-ukrainian-uses-tractor-to-haul-away-russian-missile-system/
Videos circulating on social media last week show Ukrainians using tractors to haul away Russian missile systems and a Russian military vehicle.
Why American Farmers Are Hacking Their Tractors With Ukrainian Firmware
A dive into the thriving black market of John Deere tractor hacking.
https://www.vice.com/en/article/xykkkd/why-american-farmers-are-hacking-their-tractors-with-ukrainian-firmware
To avoid the draconian locks that John Deere puts on the tractors they buy, farmers throughout America's heartland have started hacking their equipment with firmware that's cracked in Eastern Europe and traded on invite-only, paid online forums. Tractor hacking is growing increasingly popular because John Deere and other manufacturers have made it impossible to perform "unauthorized" repair on farm equipment, which farmers see as an attack on their sovereignty and quite possibly an existential threat to their livelihood if their tractor breaks at an inopportune time.
