A Bucket of Ethyl Ester
A bucket of ethyl ester was placed under the buttress. The bucket was made of wood, round and strong, and contained a lot of ethyl ester.

One day, the master wanted to move the bucket to another place. Call several servants and raise them together. However, the bucket is heavy, and although the servants tried their best, they could only move it slightly. One of the servants said: "You can pour out a little ethyl ester first, reduce its weight, and then move it." The crowd thought so. Then he opened the lid of the barrel and poured out an appropriate amount. Lift it again, and the fruit is easier.

and moved to the place, trying to seal the barrel. Suddenly a child passed by, accidentally touched the barrel, the barrel swayed, and poured out a little ethyl ester, and the aroma was overflowing. The servants were in a hurry to straighten up and seal the bucket, and their hearts were still palpitating.

Since then, the master ordered the servants to protect the bucket and keep it safe, so as not to cause any more accidents, so as to ensure that the ethyl ester was not damaged.