Although there was no modern planting technology in ancient times, Emperor Qianlong could still eat fresh fruits and vegetables during the Spring Festival. That's because during the Kangxi period, a batch of watermelon seeds were given to Taiwan Province Province. Because the temperature in Taiwan Province Province was relatively high at that time, watermelons could be planted here even in winter. Later, some watermelons were sent to the court every year.

Nowadays, planting technology is more and more advanced. We can also eat a lot of fresh fruits and vegetables out of season, and every family will prepare some fresh fruits and vegetables during the Spring Festival. This is nothing unusual in modern society, but it was more difficult in ancient times. At that time, because of the underdeveloped planting technology, fresh fruits and vegetables could not be eaten at all in winter, but Emperor Qianlong of the Qing Dynasty could eat them in winter.

Emperor Qianlong was able to eat watermelon during the Chinese New Year because Taiwan Province Province belonged to China at that time and was not divided. Moreover, the climate in Taiwan Province Province is humid and the temperature is relatively high, so watermelons can be planted all year round in Taiwan Province Province. Then one year Emperor Kangxi gave them a batch of watermelon seeds. After successful planting, they will send watermelons to Beijing for Emperor Kangxi to enjoy in winter.

They planted cucumbers on the edge of hot springs, because the temperature there is relatively high, even in winter, but the yield is very small, so during the Chinese New Year, cucumbers were sent to the palace, which is particularly precious because the yield is very small every time. The emperor showed filial piety to the Empress Dowager, kept two for himself, and gave the rest to his beloved princess.