Salman Khan and Zhu Zhu in 'Tubelight'

'Tubelight' marks Chinese actress Zhu Zhu's debut into Bollywood. The actress underwent special Hindi class to learn her dialogues in Hindi. The actress worked hard at her diction but since she only has very days to learn, at times she would take longer to get the language right and director Kabir Khan is known to be a perfectionist.