As demonstrated in previous work, this numeric representation of words has led to big improvements in many NLP tasks such as machine translation (Sutskever et al., 2014), question answering (Iyyer et al., 2014) and document ranking (Shen et al., 2014).
in between is the pronunciation of the sentence in Chinese, called PinYin, which is a form of Romanian phonetic representation of Chinese, similar to the international Phonetic Alphabet (iPA) for English.