What is Air Pollution?
Air pollution is a major change in air composition, caused by smoke, dust, water vapor or strange gases entering the air, causing strange odors, reduced visibility and climate change. They directly affect the health of humans as well as animals and plants on earth.
Current status of air pollution in Vietnam
Air pollution is a serious problem in the world and Vietnam is no exception. According to the annual report on the environmental performance index (EPI) conducted by the US Environmental Organization, Vietnam is one of the 10 countries with the highest air pollution levels in Asia.
 Current status of air pollution in the world
According to the 2020 State of the Global Air Report released by the Health Effects Institute (HEI) and the Institute for Health Metrics and Evaluation (IHME) at the University of Washington and the University of British Columbia on October 21, Air pollution in the world is very alarming. 
Air pollution is threatening human life 
The causes of air pollution come from many sources, there are basically two main causes: man-made and natural.
Natural causes
There are many natural causes such as volcanic eruptions, tsunamis, etc. that also pollute the air
Causes from humans (man-made)
There are many man-made causes from daily activities and agricultural production activities. Not only Vietnam but many developing countries are also experiencing this situation. Smoke and dust from exhaust pipes of factories and plants in industrial zones darken the sky. They emit CO2, CO, SO2, NOx and some other organic substances at extremely high concentrations.

1. We stayed with a host family.
2. I went on day trips.
3. They visited water parks.
4. I saw local attractions.
5. We went on a cycling tour.
6. They travelled by train.
7. They went on cultural visits.
8. We visited museums and galleries.

1. We stayed with a host family.
2. I went on day trips.
3. They visited water parks.
4. I saw local attractions.
5. We went on a cycling tour.
6. They travelled by train.
7. They went on cultural visits.
8. We visited museums and galleries

In recent years, the increasing celebration of festivals such as Christmas and Halloween among young Vietnamese people has sparked a debate on cultural influence. While some view this trend as harmless, others express concern about the potential erosion of traditional values. 

In my opinion, celebrating these festivals can be beneficial for several reasons. Firstly, it promotes cultural exchange and broadens horizons. Embracing different traditions allows young people to become more open-minded and globally aware. This can foster a more inclusive society where diversity is appreciated rather than feared. 

Secondly, these celebrations provide opportunities for socializing and community building. Festivals like Christmas and Halloween bring people together, creating joyful and memorable experiences. They offer a break from routine and can enhance the sense of belonging among young people, especially in urban areas where traditional community ties might be weaker.

However, it is crucial to balance this with the preservation of Vietnamese traditions. Promoting traditional festivals and cultural education can ensure that young people remain connected to their roots while enjoying the benefits of global cultural exposure. In conclusion, the celebration of foreign festivals should be seen as an enriching addition to, rather than a replacement for, Vietnamese culture.

I visit our uncle's house not only in spring but also in autummn.

I visit our uncle's house not only in sping but also in autumn 

In the study of events in Vietnam and throughout world history, we examine the past and present.

We study events in the past and present in Vietnam and throughout the world in history

1. outlook

2. breakdown

Vietnam is a Southeast Asian country known for its rich history, diverse culture, and stunning landscapes. With an area of approximately 331,212 square kilometers, Vietnam is bordered by China to the north, Laos and Cambodia to the west, and the South China Sea to the east and south. Its population is over 100 million people, making it one of the most populous countries in the region.

The official language of Vietnam is Vietnamese, a tonal language with a rich literary tradition. Vietnamese is spoken by the majority of the population and is used in government, education, media, and daily communication.

Vietnam is a diverse country with a variety of religious beliefs. The majority of the population practices Buddhism, followed by folk religions, Christianity (including both Catholicism and Protestantism), and Caodaism. There are also smaller communities of Muslims, Hindus, and other faiths.

The currency of Vietnam is the Vietnamese đồng (VND). As of my last update, the exchange rate is approximately 1 USD to 25,330 VND. The Vietnamese đồng is used for all transactions within the country, from everyday purchases to larger financial transactions.

Dịch:
Việt Nam là một quốc gia ở Đông Nam Á nổi tiếng với lịch sử phong phú, văn hóa đa dạng và phong cảnh tuyệt đẹp. Với diện tích khoảng 331.212 km², Việt Nam giáp Trung Quốc ở phía bắc, Lào và Campuchia ở phía tây, và Biển Đông ở phía đông và nam. Dân số của Việt Nam là hơn 100 triệu người, làm cho nó trở thành một trong những quốc gia có dân số đông nhất trong khu vực.

Ngôn ngữ chính thức của Việt Nam là tiếng Việt, một ngôn ngữ ngắn ngôn có truyền thống văn học phong phú. Tiếng Việt được nhiều người dân sử dụng và được sử dụng trong chính phủ, giáo dục, truyền thông và giao tiếp hàng ngày.

Việt Nam là một quốc gia đa dạng với nhiều tín ngưỡng tôn giáo. Đa số dân số theo đạo Phật, tiếp theo là các tín ngưỡng dân gian, Kitô giáo (bao gồm cả Công giáo và Tin lành), và Đạo Cao Đài. Ngoài ra, còn có các cộng đồng nhỏ của Hồi giáo, Hindu và các tín ngưỡng khác.

Đồng tiền của Việt Nam là đồng Việt Nam (VND). Theo tỷ giá trao đổi gần đây, 1 USD tương đương khoảng 25.330 VND. Đồng Việt Nam được sử dụng cho tất cả các giao dịch trong nước, từ mua sắm hàng ngày đến các giao dịch tài chính lớn.