Drag Racing

Same as the cannon defense, you will be better off spending on other things. This event comes with a “diligence and courage” to get gears and boxes for better cars. I have found that if I buy the cheapest gear pack every day and complete most of the diligence and courage quests, then I can get to a level 15 car and get whatever island gift is being offered at the time. This also slowly gets you to the empress skin. I don’t think it’s worth upgrading the skin a whole bunch through this event. You will be better off spending on equipment alloy. One tip is to make sure you join a team immediately because the game slowly gives you gears over time for the first 2 days. Collect them often and before the server reset on the 2nd day.