As the winter transfer window draws to a close, CSL clubs have been busy making their final signings for the off-season. Here are some key moves that have taken place:

1. Taishan FC: The Chinese Super League giants have made several key signings in the off-season. The most notable one is the signing of Brazilian striker Thiago Silva from Santos. Silva has been a key player for Santos in recent seasons and is expected to bring a lot of experience to Taishan's attack.

2. Beijing Guoan: Another big move came from Beijing Guoan, who signed Japanese forward Shinji Kagawa from Manchester United. Kagawa was a key player for Manchester United in his time there and is expected to add a lot of quality to Beijing Guoan's attack.

3. Shandong Luneng: The Shandong Luneng have also had a successful off-season with the signing of two new players. The first is Nigerian midfielder Emmanuel Ezenwa, who played for Crystal Palace in England. The second is Portuguese defender Rui Patricio, who joined from Benfica.

4. Tianjin Teda: The Tianjin Teda have also made some key signings in the off-season. The most notable one is the signing of Argentine forward Angel Correa from Boca Juniors. Correa has been a key player for Boca Juniors in recent seasons and is expected to bring a lot of experience to Tianjin's attack.

5. Shanghai Shenhua: The Shanghai Shenhua have also made some key signings in the off-season. The most notable one is the signing of French midfielder Florian Thauvin from Paris Saint-Germain. Thauvin has been a key player for PSG in recent seasons and is expected to add a lot of quality to Shanghai Shenhua's midfield.

Overall, these key moves by CSL clubs suggest that they are well-prepared for the upcoming season and are looking to build on their successes from last year. With such a strong off-season, it will be interesting to see how these teams perform this season.