hi mihoyo I will rate it 1 star because as time goes on the game gets heavier and the LAG of 4GB RAM of my cellphone gets stronger, I hope you fix this problem because it's a pity other people will also play 4GB RAM. using the cellphone, maybe in the next update the 4GB RAM will no longer work with the genshin impact we played because we can't afford to buy the Gaming Cellphone. Hope you understand our situation today.