1 . Warm weather gets thousands of people to gather outdoors and celebrate for various events. Here are a few fun festivals that you should travel to see this summer.

Naadam(Ulaanbaatar, Mongolia)

Naadam, also known as “the three games of men”, is the biggest traditional festival held in Ulaanbaatar, the Mongolian capital. Each July, men compete in Mongolian wrestling, horse racing and archery (射箭). Today, women also take part in the archery and girls in the horse racing.

Elvis Week(Memphis)

If moving your body to Blue Suede Shoes this summer sounds good to you, then head to Memphis for Elvis Week, usually held in August. Movies, special performances and the Ultimate Elvis Tribute Artist Contest are just a few activities to keep fans busy. The week of events is held to mark the anniversary (周年纪念日) of the death of Elvis Presley, the “King of Rock and Roll”.

Glastonbury Festival(Somerset, England)

Around 175, 000 people gather on a dairy farm in Somerset, England every year for the Glastonbury Festival. Famous bands and singers appear at the5-day music celebration. The ticket for the festival was £1 when the festival started in 1970, but today, full-weekend general tickets go for about£ 248.

World Bodypainting Festival(Klagenfurt, Austria)

During the annual World Bodypainting Festival in Austria, artists from as many as50 countries compete using a variety of techniques, including brushes, sponges and airbrushes. Alex Barendregt organized the first festival in 1998, when he was tasked with organizing a new summer event.

2 . The idea that red means stop and green means go affects more than just traffic light colors in our lives. We have been taught from a young age that red means danger, while green means safety.

But why were those particular colors chosen for traffic lights? Before there were traffic lights for cars, there were traffic signals for trains. At first, railroad companies used red to mean stop, white to mean go and green to mean caution. But train conductors ran into a problem with the color white meaning go — bright white could easily be mistaken for stars at night. Railway companies eventually moved to the color green for go. It’s been that way ever since.

Red is the color with the longest wavelength (波长). That means that as it travels through the air, it gets diffused (分散) less than other colors, so it can be seen from a greater distance. For a real-world example, think about how the light turns red as the sun sets. Even though the human eye is most sensitive to a yellowish-green highlighter color, it can see red from further away. But this could happen by chance. It’s not clear whether that was chosen based on wavelength, contrast against green nature or natural connection of red with things like blood. It could be a mix of all three!

Yellow has a shorter wavelength than red but a longer wavelength than green. This means that red is noticeable the furthest away, yellow in the middle and green the least distance away — a helpful advanced warning for needing to slow or stop.

However, believe it or not, yellow was once used to mean stop. Back in the 1900s, some stop signs were yellow because it was too hard to see a red sign in a poorly lit area. Eventually, highly reflective (反光的) materials were developed, and red stop signs were born. Since yellow can be seen well at all times of the day, school areas, some traffic signs and school buses continue to be painted the color. Keep these safe driving tips in the back of your mind whenever you see a yellow light.

3 . Li Jing, 29, currently serves as the director assistant to the village secretary of Maotianping Village Committee in Cuijiaba, a town in Hubei province. Li is a native of this village and was one of the first from her community to achieve higher education. She studied hotel management and tourism. After graduation, she started a career in the hotel industry in Wuhan. However, she made a decision last year to return to her village. She wants to be an essential part of her hometown’s development, realizing her own personal value.

When Li returned to her hometown, she received unconditional support from her family, despite some villagers’ questioning her decision. She resolved to prove herself through determination and action.

Her job involves extensive communication with the villagers, with over half of her workload about promoting potato production, the main business of the village. Li and the villagers regularly hold meetings in the village square, where they share insights on potato planting techniques, sales channels, market trends, and more. These gatherings provide her with opportunities to equip the villagers with planting tools and offer a window for them to voice their concerns and experiences.

In her spare time, Li remains closely connected with the villagers through regular conversations. She admits that it demands a considerable investment of time and energy, but it’s all worthwhile.

Li has very fond memories of an incident from last year when one villager had a poor potato crop. Although her potatoes were unimpressive in terms of size and quality, she held faith in Li and worked tirelessly and enthusiastically. Li never forgets the smiles on the villagers’ faces at harvest time, which is the ultimate reward for her.

In the near future, Li hopes to continue helping her fellow villagers raise their potato production and increase their income. Her long-term vision is to promote urban-rural integration (整合).