A skywell, or “tian jing” in Mandarin, is a typical feature of a traditional home in southern and eastern China.     1     (expose) less to the outdoor environment, a skywell is different from a northern Chinese courtyard. Skywells are     2     (relative) common in historic residences in large areas of southern and eastern China.

In today’s rapidly urbanising China, fewer and fewer people live in skywell dwellings,     3     a revival of interest in traditional Chinese architecture is leading some of historic buildings with skywells     4     (restore) for modern times. Meanwhile, some architects are drawing     5     (inspire) from skywells to help keep new buildings cooler, which is a method     6     (combine) design and technology to cool a building without the use of power.

However, there are some     7     (challenge) for bringing skywells into modern designs. The mechanisms of courtyards facilitating natural lighting, ventilation (通风) and rain collection are well known, but applying these principles     8     (need) to be site-specific. Because traditional skywells had different shapes, sizes and features, which were highly dependent     9     their natural surroundings. Adding skywells into modern buildings requires designers to be sensitive to their project’s context and situation, making it difficult to apply them as     10     universal solution.

3 . World's best scuba diving destinations

If you are planning to go on a scuba diving vacation in the near future, here is a list of some of the best destinations in the world that you can consider.

The Red Sea, Egypt

One dive underneath the surface of the Egyptian Red Sea, and all you can see is a huge variety of marine life all around you. This is one of the richest marine ecosystems in the world. You can experience a fantastic swim with the dolphins and sharks. And a variety of colorful coral and sponges (海绵动物) in the reefs look absolutely astonishing.

Bali Island, Indonesia

Considered to be the “Jewel of Indonesia”, Bali Island is undoubtedly one of the most unusual holiday destinations in the world. And that is certainly true when it comes to a scuba diving vacation as well. The most popular underwater attraction for the divers gathering here is Mola mola, the world's heaviest-known bony fish. Bali Island is known for some of the world's best scuba diving instructors and diving spots.

Half Moon Caye, Belize

If you are looking forward to doing a wall dive, then the Half Moon Caye is the perfect place for you. Once you begin diving downwards, you will be excited by seeing the variety of marine life. There are numerous tunnels filled with a variety of sponges and monster groupers. The most noticeable sightings are those of eagle rays, logger head turtles, barracudas and the rosy razor fish.