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 | Hanzi | Hanyu Pinyin | Uyghur ( UEY ) | Uyghur Latin ( ULY ) | Population (2010 Census) | Area (km²) | Density (/km²) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Name | Hanzi | Hanyu Pinyin | Uyghur ( UEY ) | Uyghur Latin ( ULY ) | Population (2010 Census) | Area (km²) | Density (/km²) |
| Karamay District | 克拉玛依区 | Kèlāmǎyī Qū | قاراماي رايونى | Qaramay Rayoni | 261,445 | 3,833 | 68.20 |
| Dushanzi District | 独山子区 | Dúshānzǐ Qū | مايتاغ رايونى | Maytagh Rayoni | 69,361 | 400 | 173.40 |
| Baijiantan District | 白碱滩区 | Báijiǎntān Qū | جەرەنبۇلاق رايونى | Jerenbulaq Rayoni | 50,422 | 1,272 | 39.63 |
| Urho District | 乌尔禾区 | Wū'ěrhé Qū | ئورقۇ رايونى | Orqu Rayoni | 9,780 | 2,229 | 4.38 |
Question:
What is the Hanyu Pinyin with an area of 400?
Answer:
Dúshānzǐ Qū