π, the most beautiful number

In the spring of March, birds are singing and flowers are fragrant, and the scenery is infinite. Early in the morning, Pie was ready to go out for a walk. The sweet ringtone "You have a new email" shows that Pai has an important email waiting for him. After being familiar with the operation, several emails were displayed one by one in front of his eyes.

The first email was sent by his father:

Send my son:

I haven't sent you an email for a long time. Have you been busy with your research recently? For centuries, countless mathematicians have a soft spot for you, but today's technology can calculate you to one trillion digits after the decimal point, and then you can get your true value, thus unveiling your mystery. As a father, I am proud of you. Today is your birthday. I wish you a happy birthday and hope you will make greater contributions to the progress of science.

Zu Chongzhi's father is today.

The second email was sent by fans:

Dear pie:

You must have forgotten what day it is today, right? Indeed, for most people, March 14 is an ordinary day, but for us, today is our festival. Because today is our idol-your birthday. For this reason, we specially held a birthday party on March 14 at 1: 59 in the afternoon. At that time, all fans will get together to discuss your problems, eat pies and other debates about you, and hold a reading contest about you. We sincerely invite you to come! Finally, happy birthday to you!

World vermicelli club

On March 65438, 2004

The third email was sent by a university in China:

Send:

All right! Let me introduce myself. My name is Lv Chao, a China boy with yellow skin and black eyes. I once recited you to 67890 decimal places in 24 hours and 4 minutes. I am the current world record holder who recites you. I like you. You are a beautiful number, representing infinity. In the process of carrying you, I encountered setbacks, but I survived. Thank you for giving me strength! Thank you for giving me confidence and courage to challenge other difficulties! Happy birthday!

Lv Chao, a college student in China.

On March 65438, 2004

"So today is my birthday!" The pie was a little surprised. Later, Pai replied to their emails one by one and wrote a blog post on his blog, telling his birthday feelings. The title of the blog post is "boring numbers, infinitely beautiful".