1. "Envoys" shorten the duration of the war to 6 rounds;
2. "Record" skill cost is 3;
3. Fixed the bug where buff effects were displayed at the front of the menu.
4. Solved the bug that "civil service", "investment" and "mechanization" can be used in non-resource land;
5. Solved the bug that "carriage", "train" and "plane" could be used on immovable land;
6. Accelerated the accumulation speed of food, industry and culture on ui;