There are PhD programs taught fully in English: Department of Civil Engineering (Masters program), Inst of International Management (also known as IIMBA, Masters and PhD), and Inst. of Creative Industry Design (Masters and PhD).
Most undergraduate courses are taught in Chinese, course materials could be Chinese or English depending on the professor's choice. Therefore, students are expected to have adequate level of Chinese.
Besides the full English programs mentioned above, most classes in postgraduate programs are also taught in Chinese, with some taught in English, therefore, students should have sufficient Chinese language abilities in order to achieve good academic performance.