I am Korean. So far /until now, I have thought that Korea is one of the least diverse countries in terms of race and culture. Conventional Koreans (who are) in their 50s and above cannot understand cultural diversity because they have a very stereotypical and standardized (point of) view of Korean culture. However, it looks like /it appears that younger (Korean) generations are more open-minded and respectful of different cultures, because they have more chance /opportunity to come across /meet (various) people from different cultural backgrounds as Korea has a stronger presence worldwide.

'What's by your side ’ ? It would probably be better to say 'what you have' unless the thing in question really is ’by your side’ ie next to you. Remember not to take what you have for granted.

If the quantity [number] word eg dozen, hundred, thousand is singular you don't use 'of' before the things concerned eg two dozen large doughnuts, two hundred apples, a thousand birds, several hundred tickets If the quantity number word is plural you add 'of' before the things you are referring to eg. hundreds of people, thousands of birds This is usually less precise than when you say 'two hundred people', 'five thousand birds', etc.

It means a social event, a party, possibly to celebrate sthg. eg someone's birthday. It's a slang word used in casual speaking.

Actually, there are a lot of /many holidays worth celebrating in my country. Among them, the Spring Festival has the highest position /place in most Chinese people's heart. The spring Festival of 2026 is around the corner. In China, this festival means the beginning of a /the year. The weather gets warm and farmers will sow crops soon. In ancient times, sowing was the most important thing /activity for everyone. There is a great saying that goes "You sow a seed in the spring, and harvest a thousand seeds in the fall". Sowing is not just an action, but also hope for a family so, Spring is usually considered as being full of opportunity. Clear sky and fresh air also make people feel relaxed so Chinese people really want to celebrate this great time. The world will be decorated in red. Chinese people believe that the colour red and the sound from /of firecrackers can bring them good luck and take away all the bad things that happened throughout /in the last year. So, if you think Spring is a great time, you can join us to celebrate the Spring Festival, wherever you are !

I'm not American, but I think it's fine. The only alternative I can think of is 'on my team' but I prefer 'in'.

As Jeff says, none are suitable for people you don't know well. Your best line in this sort of situation is 'Excuse me'. It usually 'does the trick' ie has the required effect.

You don't usually say 'I'm scarred' when referring to a physical injury, though you can say 'I have a scar'. ' I'm scarred' is often used to mean that an event or experience has had a profound impact on you and has changed you psychologically, with the implication that it is for the worse. The scar is mental, rather than physical. You could also say that sthg. had left a scar on s.o., again implying a long-lasting mental effect.