Happy - you must always leave a blank space after a punctuation mark such as a "period, a comma, a question mark, a colon and semi-colon, etc".

First notebook entry: Introducing myself

I am glad to be here.My penname is happy pig,because I want to live a happy life just like a happy pig.

I come from the capital of Hebei Province in China.I am a postgraduate in grade one.I am outgoing and like making friends with people.Meanwhile,I like traveling to beautiful places [or you could say "I like visiting beautiful places"] and eating delicious food.
I visited Xi'an and I really enjoyed the food there.

English is one of my most favourite foreign languages.
[The expression "one of ..." means "one of many or one of more than two, therefore the noun "language" must be plural]

I have learned English for many years but I have little chance to communicate with foreigners,so,I would like to catch [I would like to take advantage of]  any chance to improve my English.

Though my English is ont [I know that's just a typing error] good,I will try my best to practice.Would you like to grew up grow/improve with me?Please come on!
[The phrasal verb "grow up" means to spend time with someone, especially when you're young, e.g. I grew up together with my best friend from the age of 5 until I was 15.  "Grow up" is also used to tell someone to act their age, e.g. You have been acting like a silly child. It's time for you to grow up (become more responsible, more serious or mature.]

Good writing Happy