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:
| Rank | Athletes | Country | Time | Notes |
| --- | --- | --- | --- | --- |
| 1.0 | Andrei Bahdanovich , Aliaksandr Bahdanovich | Belarus | 3:40.369 | QF |
| 2.0 | Serguey Torres , Karel Aguilar Chacon | Cuba | 3:41.171 | QF |
| 3.0 | Sergey Ulegin , Aleksandr Kostoglod | Russia | 3:41.291 | QF |
| 4.0 | Chen Zhongyun , Zhang Zhiwu | China | 3:41.658 | QS |
| 5.0 | Wojciech Tyszyński , Paweł Baraszkiewicz | Poland | 3:42.177 | QS |
| 6.0 | Deyan Georgiev , Adnan Aliev | Bulgaria | 3:54.111 | QS |
Question:
What is the rank for the man from China with notes of QS?
Answer:
4.0