Open you game and your Cheat Engine.
Note; Use Google Chrome for this cheat
1- open you game and wait until it loaded
2- Now open your Cheat Engine and select an process (chrome.exe)
3- Now set your Cheat Engine to 4 Bytes and Scan fro> 4500
4- Drag all the result and change the value to > 0
5- New scan and set your Cheat Engine to String
6- Scan for > 8D 01 00 00 01 00 00 00
7- Drag all result to address list and change the value to > F0 49 02 00 01 00 00 00
8- Now open your market and buy Hay Wagon and place it in your farm
If your game crash try it. Use Chrome for better result.