A recent controversy has erupted in China, where a prominent maths lecturer, Hong Wang, has been targeted by cyber nationalists for delivering his lectures in English. The backlash against Wang has sparked a heated debate on social media, with many users expressing their outrage and disappointment. Wang, a well-known maths expert, had been invited to give a series of lectures at a prestigious university in China, but his decision to use English as the language of instruction has been met with fierce criticism. Many Chinese netizens have taken to social media to express their discontent, accusing Wang of being a ‘traitor’ and ‘unpatriotic’ for not using Mandarin Chinese. The controversy has highlighted the sensitive issue of language and nationalism in China, where the use of English is often seen as a symbol of Western influence and cultural imperialism. Despite the backlash, Wang has defended his decision, citing the need for Chinese students to be proficient in English in order to compete in the global academic community. He has also argued that the use of English is essential for the dissemination of knowledge and ideas in the field of mathematics. However, his arguments have fallen on deaf ears, with many Chinese netizens remaining unconvinced. The incident has sparked a wider debate about the role of language in Chinese education, with some arguing that the use of English is necessary for China’s economic and academic development, while others see it as a threat to Chinese culture and identity. The Chinese government has also weighed in on the issue, with officials emphasizing the importance of promoting Mandarin Chinese as the national language. The controversy surrounding Wang’s lectures has also raised questions about the limits of free speech and academic freedom in China, where dissenting voices are often silenced or censored. In recent years, China has seen a surge in nationalist sentiment, with many citizens expressing their pride and loyalty to the country through social media. However, this surge in nationalism has also been accompanied by a growing intolerance for dissenting voices and alternative perspectives. The incident has sparked concerns about the impact of nationalism on academic freedom and the exchange of ideas in China. As the debate continues to rage on social media, it remains to be seen how the controversy will be resolved and what implications it will have for the future of education and academic freedom in China. The incident has also highlighted the need for greater understanding and tolerance in Chinese society, where different perspectives and opinions are often met with hostility and aggression. Ultimately, the controversy surrounding Wang’s lectures has raised important questions about the role of language, nationalism, and academic freedom in China, and has sparked a much-needed debate about the values and principles that underpin Chinese society.