I hope you choose a relatively formal institution. You can get a lot of information about the price of picoseconds on Yueta.com. If you know the price details and other people's cases, you can be sure. Courage up. . -pure heart and lack of desire can lead a happy life. Don't be too strict with your appearance, and don't feel inferior to your appearance. What your parents gave you was the most special and unique. Time flies, and the years pass. Rich or poor, people can only live for a lifetime. No matter how much you hate to admit it, for most people, the essence of life is repetition. We are not as powerful as we think, so don't be too hard on ourselves.