You need a securities company to open a securities trading account. If you trade in stocks, you can also trade directly with a stock account.

To open an account, you need a valid identity document and a bank account designated by the securities company; just fill in the relevant application form; it is best to open online transactions.

Book-entry treasury bonds are mainly issued through securities companies and over-the-counter pilot banks. After issuance, they are listed and traded through exchanges and pilot banks. You can buy and sell them at any time during trading hours; because book-entry treasury bonds can be bought and sold at any time, other

Prices, like stocks, fluctuate up and down. If the price of a Treasury bond falls when you sell it, you will lose money; conversely, if the price rises, you can sell it and earn the difference; there is still interest income, and one day of holding will earn you one day's interest; note that

After the account-type treasury bonds mature, the state will still redeem them at 100 yuan per piece; at the same time, the term of the account-type treasury bonds is generally longer, and the interest rate is generally not as high as that of newly issued certificate-type treasury bonds.

Although the interest rate of accounting-type treasury bonds is not as high as certificate-type and savings-type treasury bonds, they have good liquidity because they can be traded at any time.

The maturities include 3 months, half a year, 1 year, 3 years, 5 years, 7 years, 10 years, 20 years, 30 years, etc. There are many varieties, but because they can be traded at any time, you can buy book-entry treasury bonds with any term.

Hold it for a certain period of time and then sell it.

The face value of book-entry treasury bonds is 100 yuan per piece, and 1 lot = 10 pieces, that is, the face value is 1,000 yuan; each transaction is at least 1 lot.

However, the price of book-entry treasury bonds fluctuates up and down, and may exceed 100 yuan or be lower than 100 yuan, so you can think of one lot as the price of each lot multiplied by 10.

For example, 04 Treasury Bond (10), transaction code: 010410, if today's closing price is: 103.25 yuan/piece, then 1 lot = 103.25*10 = 1032.5 yuan.

Because the trading rules for book-entry treasury bonds are net price transactions and full price settlement, in addition to the transaction price, the settlement also includes accrued interest; the calculation formula for accrued interest is: coupon rate × face value/365 days (one year

Actual number of days) × Number of interest accrual days (actual number of days from the interest accrual date to the transaction date).

But don’t worry if you don’t know how to calculate. You can check relevant websites for this information.

If you hold a Treasury bond until the interest accrual date, you will receive one year's interest, and the accrued interest will be recalculated after the interest accrual date.

If you sell midway, you can also get the interest income during the holding period; that is, the accrued interest paid to you by the buyer.