Postal code: 100096.

Street: Longzeyuan Street.

Address: No.2, Beinong Road, Huilongguan, Changping District, Beijing.

The steps of sending a letter are as follows:

(1), ready to send a letter.

(2) Go to the local post office to buy envelopes and stamps (the destination of letters is different, and the types of stamps are different, so you can ask the postal staff).

(3) Fill in the envelope information, including the recipient's address, the sender's address, the recipient's name, the sender's name, and the postal codes of both parties, then paste stamps at the corresponding positions, and finally seal the envelope.

(4) Give the letter to the post office staff or put it in the mailbox.

Rules for filling envelopes:

(1), write the recipient's address on the first line of the envelope. The handwriting should be neat and the place names should be detailed. Place names should be written from provinces, cities and counties to districts, streets and house numbers. If you are writing to the countryside, you should also write down the names of towns and villages. There are six squares in the upper left corner of the envelope, and the postal code of the recipient should be filled in.

(2) Write the name of the recipient in the middle of the second line of the envelope. According to the identity of the recipient, you can write "Cong Comrade" or "Cong Mr. (Ms.)" after the name. Do not write titles here, such as "Cong Grandpa".

(3) Write the address and name of the sender on the third line of the envelope. The sender's postal code should be filled in the lower right corner of the envelope. In the case of difficult delivery, the post office can quickly return the letter to the sender according to this information.

Reference to the above content: Baidu Encyclopedia-North China Electric Power University