Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Name/Name of Act | Age(s) | Genre | Act | Hometown | Semifinal (Week) | Position Reached |
| --- | --- | --- | --- | --- | --- | --- |
| Liu Wei | 23 | Performing | Disabled pianist | Huangpu , Shanghai | 1.0 | Winner |
| Zhang Fengxi | 6 | Comedic act | Shanghainese stand up comedian | Huangpu , Shanghai | 3.0 | Runner-up |
| Cai Xiuqing | 23 | Singing | Singer | Guangzhou , Guangdong | 2.0 | 3rd place |
| Modern Grannies | 41-62 | Dancing | Bellydancing troupe | Wuhan , Hubei | 2.0 | Final |
| Shou Junchao | 24 | Singing | Rapper | Huangpu , Shanghai | 1.0 | Final |
| Xu Mingfei and Zhang Zhengbang | 24 | Dancing | Robot Clowns Act | Chengdu , Sichuan | 2.0 | Final |
| Zhai Xiaowei and Ma Li | 25-33 | Performing | Disabled Acrobats | Zhengzhou , Henan | 3.0 | 4th place |
| Zhu Xiaoming | 20 | Singing | Singer | Huangpu , Shanghai | 3.0 | Final |
| Chen Jing | 29 | Singing and Performing | Singer and Strength Act | Huangpu , Shanghai | 1.0 | Semifinal |
| Chuan Zi and "Dudu" the dog | 11-42 | Singing and Performing | Singing and Dog Howling Act | Dongcheng , Beijing | 1.0 | Lost Judges' Choice, Semifinal |
| Dennis | 25 | Performing | Male Pole Dancer | Uzbekistan | 1.0 | Semifinal |
| Gao Yifeng | 49 | Singing | Singer | Hefei , Anhui | 3.0 | Semifinal |
| Jiang Renrui | 45 | Performing | Peacock Dance | Hulunbuir , Inner Mongolia | 2.0 | Semifinal |
| Old Buddies | 41-52 | Singing | Band | Dongcheng , Beijing | 3.0 | Semifinal |
| Power | 22 | Performing | Acrobats | Cangzhou , Hebei | 2.0 | Semifinal |
| Shenzhen Migrant Workers Hip-Hop Group | 21-23 | Dancing | Hip Hop Dance troupe | Shenzhen , Guangdong | 1.0 | Semifinal |
| Wenkexin Bellydancing Group | 23 | Dancing | Balancing/Bellydancing Group Act | Beijing | 3.0 | Semifinal |
| Xu Hongdong | 31 | Singing | Opera singer | Lu'an , Anhui | 2.0 | Semifinal |
| Yang Di | 24 | Performing | Lip-synching Act | Ngawa , Sichuan | 2.0 | Semifinal |
| Zhang Aiqing and Zhang Jianfa | 7-51 | Dancing | Dance Duo | Huangpu , Shanghai | 2.0 | Lost Judges' Choice, Semifinal |
| Zhou Jinsong | 46 | Singing | Singer | Dongcheng , Beijing | 3.0 | Semifinal |
| Zhou Yanfeng and his wife Xu Na | 35 | Singing | Singer | Huangpu , Shanghai | 3.0 | Semifinal |
| Zhu Jie | 23 | Singing | Singer | Xicheng , Beijing | 1.0 | Semifinal |
Question:
How many performers are 29 that made it to the semi finals?
Answer:
1.0