St. Patrick's Day is celebrated on March 17 every year in honor of St. Patrick, the Guardian of Ireland. The festival originated in Ireland in the late 5th century and has now become Ireland's National Day. With people of Irish descent spread all over the world, St. Patrick's Day has gradually become a holiday in some countries.

St. Patrick was an Irish bishop who later became a saint. In 432, St. Patrick was sent back to Ireland by the Pope to convert the Irish to Catholicism. When he landed in the eastern Irish city of Wicklow, angry pagans tried to stone him to death.

However, St. Patrick was fearless and immediately plucked a three-leaf clover to illustrate the doctrine of the Trinity of the Father, the Son and the Holy Spirit. His eloquent speech moved the Irish so much that they were baptized by St. Patrick the Lord. On March 17, 461, St. Patrick died, and in order to commemorate him, the Irish designated this day as St. Patrick's Day.

St. Patrick's Day is celebrated every year on March 17 in many cities around the world with a series of ceremonies. Green hats, green faces painted with green decorations, holding green clover in their hands, through the city's main road, for a grand parade. Sometimes even small dogs are decorated with clover on their foreheads by their owners. People cheered and gave each other warm wishes.

In addition to carnival parades, cities also celebrate St. Patrick's Day in other ways. In order to celebrate this festival, the American city of Chicago will dye the Chicago River through the city center green before March 17 every year. The whole Chicago River changed one color and it was spectacular. Every year since 1962, hundreds of thousands of Chicagoans and tourists have gathered on both sides of the river to watch the "green" river activity.

There are three iconic symbols of St. Patrick's Day.
The first one is clover. The Irish advocate "good things come in threes", and "three" is their lucky number. And when St. Patrick preached, he used the clover to explain the doctrine of the Trinity of the Father, the Son, and the Holy Spirit.

The second is the Irish Elf, also known as the Fairy Fairy. It is said that this kind of elf likes to live in isolation and has a difficult and eccentric personality. They made their living by making shoes and had a lot of gold, silver and jewellery. Legend has it that where the rainbow appears, there is always treasure, and there must be Irish elves.

The third is green beer. Legend has it that St. Patrick's Day taught the Irish how to make wine and helped them keep fit. St. Patrick's Day is a Catholic period of fasting, but it gives people a chance to drink and have fun. One of the biggest worries of the Irish these days is that they find it hard to shake off their image as drunkards.

St Patrick's Day is full of people, but it's still worth a visit!

【 Expected 】

• Watch the parade can not be crowded in, have to go to the lake park (east) early to occupy a place, the west is full of people.
• The water is green, bright green
• It's very windy and very cold where it's windy
• There's a good show
• Two cities above and below ground
• Industrial Museum is more suitable for junior high school students
• There's a line at almost every restaurant downtown
• The green water will last for several days, the first day is the brightest green
  
  【 Unexpected 】
• The architecture tour of the Chicago River is very interesting, the first floor is also very cold, and the second floor can only see which buildings the docents introduce
• Google map bus times are not very accurate, Ventra software is more accurate