Upping the ante against alleged Hindi imposition by the Centre, Tamil Nadu Chief Minister M K Stalin on Thursday once again said the state will not allow the "imposition" of the language and vowed to protect Tamil and its culture. "Will oppose Hindi imposition. Hindi is the mask, Sanskrit is the hidden face," he said in a letter to partymen. The ruling DMK has been alleging Hindi imposition by the Centre through the 3-language formula as part of the National Education Policy (NEP), a charged denied by the union government. In the letter, Stalin claimed many north Indian languages spoken in Bihar, Uttar Pradesh and Madhya Pradesh such as Mythili, Brajbhasha, Bundelkhandi and Awadhi "have been destroyed by the hegemonic Hindi." "More than 25 north Indian native languages have been destroyed by the invasion of hegemonic Hindi-Sanskrit languages. The century-old Dravidian movement safeguarded Tamil and its culture because of the awareness it created and the various agitations," the rul