A 2k general exp is an item in Evony TKR (The King's Return).
The description of 2K General EXP in Evony TKR says:
Grants your General 2,000 EXP.
2K General EXP is known to potentially be obtainable from opening Lv8 Boss Monster Chest, Lv9 Boss Monster Chest, Lucky Box Ⅳ, Royal Thief Chest, Junior Hydra Chest and Medium Hydra Chest. The links for each item are below:
Note: This list may be incomplete.