An envoy for the exiled Tibetan spiritual leader the Dalai Lama says the latest round of talks with China have been “one of the most difficult sessions” held so far.

But he says he will return for more discussions in a few months.

Lodi Gyari says he told his “Chinese counterparts very candidly that if there is not seriousness on their part it is almost pointless for (them) to waste each other’s time” with more talks.

Gyari was speaking to reporters Friday at New Delhi’s airport before returning to Dharmsala, the base for Tibet’s self-declared government-in-exile.

Two days of meetings were held this week in Beijing between Chinese officials and the Dalai Lama’s envoys.