Age Restriction for Visa to visit Manasarovar

Hello! I heard that there is a new immigration rule initiated this year that forbids people over the age of 65 to enter Manasarovar via Zhangmu. Is this true?

Is there an age restriction for a border visa issued at Zhangmu to visit Manasarovar and Kailash? The person who wishes to travel is an Indian national of 70 years old and is travelling with a tour group.