The firm is being penalised for its role in the failure of property giant Evergrande.

The company blames a drop in sales, the cost of living and a move towards electrification.

More than 30,000 workers down tools after union members voted overwhelmingly to back the strike.

Watchdog has particular concerns about the customers least able to afford mobile services.

A private consortium proposes a 50-mile (80km) link after a review commissioned by the regions' mayors.