Biological Survey Report on the Origin of Human Life 20

Because everyone wants to enjoy it, there is a life origin.

The origin of Chinese surnames.

As a surname that continues by blood, it first appeared in China. Starting from 3000 BC, China's first surname, the surname Feng, Zhong.

Let's study history first and find its starting point.

The festival of honoring ancestors and remembering ancestors is a button to recognize ancestors and return to their ancestors; It is also a ritual of hiking, getting close to nature, and urging new life...

The Earth we live on is a planet in the Solar System, which is only a part of the Milky Way, and there are a staggering number of extragalactic galaxies outside the Milky Way.

The surface area of the earth is 100 million square kilometers, of which the ocean area is 100 million square kilometers, accounting for about 71%; The land area is 100 million square kilometers, accounting for about 29%. We already think that the earth is very big, but when we put it in the vast universe, it is not even a speck of dust.

To use such an analogy: if the solar system is reduced by a ratio of 1 in 10 billion, then its radius is a runway of 590 meters, the sun is like an orange, Mercury, Venus, the Earth, and Mars are only the size of a pin, the two grape grains are Jupiter and Saturn, the two pea grains are Uranus and Neptune, and Pluto is a grain of sand. However, the Sun is just one of the 200 billion stars in the Milky Way.

The universe is too big to be conveniently measured in the units we normally use to measure distances, so astronomers use light years to express the distance between planets. A light year is the distance that light travels in a year's time. The speed of light is 300,000 kilometers per second.

If we draw a circle with a radius of 2 billion light-years in the sky, this circle will include 3 billion island universes, and each island universe will contain tens of billions or even hundreds of billions of stars, and now we know that it has reached the range of 10 billion or even tens of billions of light years, but this is still a very small part of the universe.

If the distance from the Earth to the Sun is compared to the thickness of an ordinary playing card, then the closest star to the solar system, Centauri, is 30 kilometers long, and this distance is 43 light years, which is 406,000,000,000,000 kilometers, and if a spaceship flies to this star at the speed of light, it will also take 43 years, which is still the closest star to the solar system.

Origin of Labor Day:

May Day originated from a general strike of workers in the city of Chicago, USA. On May 1, 1886, 216816 workers in Chicago went on strike for an eight-hour workday, and after a bloody struggle, they were finally victorious.

In commemoration of this great workers' movement, in July 1889, at the founding meeting of the Second International, organized by Engels, it was announced that May 1 of each year would be designated as International Labor Day.

May Day, also known as International Labor Day and Labor Day, is the Labor Day of most countries in the world.

The festival originated from the workers' strike in Chicago, USA, and in commemoration of this great labor movement, the inaugural meeting of the Second International in 1889 declared May 1 as International Labor Day.

On December 14, 2007, China revised the Measures for National Festivals and Memorial Days for the second time, adjusting the starting time of the Spring Festival holiday from the first day of the first lunar month to Chinese New Year's Eve; "May Day" was adjusted from 7 days to 3 days, a decrease of 4 days; Qingming, Dragon Boat Festival and Mid-Autumn Festival are added as statutory holidays, each with a 3-day holiday. May Day week will also be history. Since 2008, the May Day week has become a 3-day holiday.

According to the "Decision on Amending the National Festival and Memorial Day Holiday Measures", the 2008 "May Day" International Labor Day: May 1 and 3 days off, a total of 3 days. Among them, May 1 is a statutory holiday, May 3 (Saturday) is a public holiday, May 4 (Sunday) is a public holiday, and May 2 (Friday) will be transferred, and May 4 (Sunday) will be worked.

According to the "National Festival and Memorial Day Holiday Measures" and the notice of the General Office, the specific arrangements for the 2009 "May Day" holiday: May 1 to 3 holidays, a total of 3 days. May 1 (Friday) is a national holiday, May 2 (Saturday) and May 3 (Sunday) are public holidays, and May 4 (Monday) is a public holiday.