THE Shanghai Rolex Masters tennis tournament will be linked to the World Expo this year. The world's top eight male players - Rafael Nadal and Fernando Verdasco from Spain, Novak Djokovic from Serbia, Roger Federer of Switzerland, Andy Murray from the UK, Robin Soderling from Sweden, Nikolay Davydenko from Russia and Tomas Berdych from the Czech Republic - will all be invited to the pavilion of the country they represent.

Each of these pavilions have already attracted millions of visitors since the Expo opened on May 1. Taking advantage of the tennis tournament and the popularity of the players, the pavilions will try to further promote their countries. Most will have a display at the tennis tournament, introducing the highlights of their respective pavilions. Some players will make an appearance at the Expo to meet fans.

The following guide offers tips on visiting the pavilions, including how to avoid the most crowded hours and some information to better enjoy the exhibits.

UK Pavilion

United Kingdom Pavilion will invite Andy Murray to visit the "Seed Cathedral," as it is known to visitors.

The pavilion will also organize a "UK Day" at the tennis center, with performances and exhibitions.

One of the most innovative concepts of all Expo pavilions, the construction is formed of 60,000-plus transparent acrylic rods containing seeds from all over the world.

Many of the seeds come from Kunming, capital city of Yunnan Province.

The seeds are embedded in the pavilion's walls and ceiling.

The interior imitates the concept of public parks, a common public space in UK where artists perform and share ideas.

The pavilion will also invite various kinds of artists to perform inside.

Serbia Pavilion

Serbia Pavilion, with the theme "City Code," has an impressive colorful facade based on the country's traditional architecture. It turns into a splendid sight at night with sparkling LED lights.

The key element inside is time, and to be more accurate, the time period of two seconds. The highlight of the pavilion includes a video of various Serbians answering the question "what can you do with two seconds."

The question is inspired by the Serbian geophysicist and civil engineer who created the leap year rule of the Revised Julian Calendar, said to be the most accurate calendar in the world today, with only two seconds of gap each year.

The wall next to the screen is covered with time cards, one for each day of the year, for visitors to collect.

Sweden Pavilion

The Sweden Pavilion will also have a display area at the tennis center to promote the country's culture and sports. They will also host a cultural performance at the center on Friday, giving out honorable awards. They are now negotiating with Robin Soderling to appear at the pavilion.

The most popular item in the pavilion is the steep orange slide that connects the first and second floors of the venue. Visitors line up to get into a large bag before sliding down the exciting track. The eight swings are also among the most wanted items, where one can sit on the swing chair and watch videos about Swedish innovations.

Russia Pavilion

The Russia Pavilion is one of the most talked about among all Expo pavilions due to its castle-like exterior and fairy tale interior.

The Fairy Tale Castle or the Flower Castle, as it is known to visitors, is among the favorite venues for kids because of the surrealistically colorful world it presents. The pavilion's exhibit is based on stories by children's literature writer Nikolay Nosov.

Switzerland Pavilion

The Switzerland Pavilion will feature a sculpture of Roger Federer for the duration of the tournament.

Its signature chair lift, touring an S shape on the rooftop of the pavilion, has made the venue one of the most crowded. Go on a sunny day if this is your thing - the operation is suspended when it rains.

The lift is especially gorgeous at night, when the lights of surrounding pavilions and the Lupu Bridge provide one of the best views at the Expo.

Tip: Fast pass is available for Swiss passport holders.

Spain Pavilion

The Spain Pavilion is one of the most eye-catching at the Expo due to its facade, made of 8,000 hand-weaved wicker panels from China's Shandong Province.

Known also as the basket, the pavilion features a flamenco dance and movies, beautiful views of Spanish cities and high technology in three sections.

The first part showcases a fantastic flamenco performance, a combination of an amazing video of the dance and live performances in front of visitors.

Another highlight of the pavilion is Miguel, a giant animated baby. The 6.5-meter-tall electronically animated baby changes his expression while turning its head from left to right and back.

Tips: Fast pass to the pavilion is available by collecting stamps of three Spain UBPA cases on the Expo passport pages.

Czech Republic Pavilion

The Czech Pavilion will invite Tomas Berdych and Lukas Dlouh to visit, give a clinic and invite kids to play some games with them.

They will also put up a display area with interactive games at the Qizhong Tennis Center. The Czech Pavilion facade, in the shape of the old town of Prague, is made of ice-hockey pucks, another sport the country is proud of.

The pavilion is compact with a variety of exhibition items, each giving a taste of the country - animation, music, perfume, arts, etc. Even a virtual flight over the countryside is available in a model airplane.

Highlights include two pieces of bronze relief with the statue of Saint Jan Nepomucky on the Charles Bridge in Prague.

LacrimAu is a tear made of pure gold, the size equivalent of one ton of pure gold. The Golden Tip Competition invites visitors to guess the exact weight of the metal, less than 1 ton, through Bluetooth. The top 10 winners will divide 500,000 yuan (US$73,160).

Tips: Fast pass is available by collecting four UBPA stamps °?- one from Prague and three other stand-alone cases. Two hundred tickets are available at the Prague case in UBPA every day - 100 in the morning and 100 in the afternoon. Free gifts such as pins and masks are given to all visitors. Circus performers are always there to entertain those in the queue.