'Black Monday' as WeChat service lost

Breakdown brings misery for millions of mobile app enthusiasts across nation

For Chen Zidan, a 28-year-old insurance company worker in Shanghai, yesterday's temporary loss of service on WeChat was a "Black Monday".

After waking up, she found herself disconnected from the popular mobile communications app's server, through which she keeps in contact daily with more than 200 friends she has not seen for months.