nǎi shì
equivalent to either 是[shi4] or 就是[jiu4 shi4]
Shī Nài ān
Shi Nai'an (1296-1371), author of Water Margin or Outlaws of the Marsh 水滸傳|水浒传[Shui3 hu3 Zhuan4]
Shuǐ hǔ Zhuàn
Water Margin or Outlaws of the Marsh by Shi Nai'an 施耐庵[Shi1 Nai4 an1], one of the Four Classic Novels of Chinese literature
Shuǐ hǔ Quán zhuàn
Water Margin or Outlaws of the Marsh by Shi Nai'an 施耐庵, one of the Four Classic Novels of Chinese literature
also written 水滸傳|水浒传