238 years ago today, May 25, 1787 (April 9, 1787 in the lunar calendar), the Philadelphia Constitutional Convention was held. The presiding officer of the 1787 U.S. Constitutional Convention was George. Washington. Madison, a major participant in the U.S. Constitutional Convention and known as the "father of the Federal Constitution" of the United States, gave a complete record of the 116-day Constitutional Convention held in Philadelphia from May 25 to September 17, 1787. The record is full from beginning to end, covering all issues debated during the Constitutional Convention process. It truly and completely reproduces the overall historical picture of the 1787 Constitutional Convention in the United States, and vividly and realistically describes various specific details of the debate at the conference. May 25, 1787, was the first day of the Philadelphia Constitutional Convention. According to Madison's records, three things were done that day: the first was to elect the chairman of the Constitutional Convention. On the proposal of Mr. Morris, the representative of Pennsylvania, and by a written vote of the representatives participating in the conference, General George Washington was unanimously approved by the seven states present at the conference that day and was elected Chairman of the Constitutional Convention. The second thing is to appoint a conference secretary. The operation method is still to nominate representatives and vote for decisions. As a result, Major Jackson was elected with 5 votes, and then 81-year-old Dr. Benjamin Franklin was defeated because he had only two votes. The third thing was the election of a drafting committee for meeting rules, based on the proposal of the meeting representative, Mr. Pinckney. After voting, three Mr. Weiss, law professor, lawyer Hamilton, and lawyer Pinckney were elected to form the drafting committee of the rules of the Constitutional Convention. The meeting drafted a new constitution, which came into effect on March 4, 1789. Comments: Countless people study and learn objects, and the meaning needs not be said.