It is a legitimate action for China's nuclear submarine to enter the Indian Ocean since China has interests in the region, Yin Zhuo, a military expert, said in an interview.

China is a stakeholder in the Indian Ocean, said Yin in an interview with China Central Television. Every year, China transports goods worth $1.5 trillion through the waters, and China also use routes in the Indian Ocean to transport petroleum.

China's decision to send a nuclear submarine into the area simply demonstrates the country’s commitment to protecting its legitimate rights, according to Yin.

CCTV reported that China's activities in the Indian Ocean give India no reason to be concerned. Furthermore, the New York Times said that India and Japan are in talks to collaborate on upgrading civilian infrastructure in the Andaman and Nicobar Islands, an Indian archipelago seen as a critical asset to counter China’s efforts at expanding its maritime reach.

Yin pointed out that the Indian Ocean is free to all countries. India's deployment of P-8I and other anti-submarine frigates in the area indicates the country’s concern for security, but China has always been transparent about its activities in the region.