Avoid using white candles, but use red and colored candles. In China, white candles are used for funerals.
Generally speaking, the default age is how many candles to insert, but for the elderly, it is not advisable to insert too many candles. Generally, a candle represents one year old.
When choosing birthday candles, you should buy them in a special cake shop and pay attention to hygiene when using them.
When lighting candles, it is recommended to light them with matches. When lighting candles, be careful not to say that ashes will fall on the cake. When lighting candles for the elderly, be respectful and give them a sense of respect.