Korean "1004" is homophonic with "angel", so this number means, be my angel.

2. "1004" in the stock market means:

IF stands for the Shanghai and Shenzhen 300 index stock index futures contract, and the last four numbers represent the delivery time of the stock index futures contract. The first two digits represent the year, 10 represents the year of 20 10, omitting the 20 before 20 10, and the last two digits represent the month and the stock of 20 10.