Everyone knows that candles should be blown out on birthdays. Which country did this custom originate from?

It is said that this custom originated in ancient Greece. The ancient Greeks worshipped the moon goddess very much and held a birthday celebration for her every year. At the celebration, the cake made of flour was filled with candles. Later, with the passage of time, it was the same for westerners to celebrate their children's birthdays, and then it spread to China.