There was no cooking oil at home at the end of the month, and I was planning to go buy some. My mom said, "I'm going to teach you a lesson today, and you are not allowed to make a sound for a while." I followed my mom to the Industrial and Commercial Bank of China (ICBC). My mom said she wanted to withdraw fifty thousand yuan in cash. The staff asked normally what the withdrawal was for, and my mom said that the Agricultural Bank across the street deposited fifty thousand yuan today and gave a barrel of oil as a gift. The staff said, "Wait a moment, I’ll ask the supervisor." After a while, she came back carrying the barrel of oil and said, "Just keep the money in ICBC, no need to change." I was extremely impressed with my mom, and she just gave a mysterious smile, telling me to wait for her at the intersection. She turned and went into the Agricultural Bank across the street, and after a short while, she came out again carrying a barrel of oil.