A free 12-hour mandarin course is available, and registration is open to any foreigners working and living in Shanghai China.

Shanghai International Academic Exchange Association（SIAEA）, a home to foreign talents in Shanghai, is launching a mandarin program to help the foreign talents working & living in China. The program aims at improving the Mandarin/Chinese language efficiency of the foreigners.
Aside from SIAEA, two other companies are playing important roles in this program. One of them is Shanghai Yudian Education Ltd who provides TCSOL certified Chinese teachers willing to teach as volunteers, the other is SuperChinese who is a leading Mandarin learning software company, helping to set training structures and academic standards in this program. Working closely together the three parties make the free mandarin lessons possible for foreign talents in Shanghai.
The free lessons will be taught online with live Chinese teachers working 1 on 1 or 1 on 3 with the foreigners. There are 3 levels of course to cater to different learners, beginner, intermediate and advanced.
Each level of course contains 8-12 hours of live teaching, and many hours of self-study with SuperChinese software. Generally, students and teachers meet twice a week online, an hour each.
More details will be delivered to you after you sign up.
If you are a foreigner working in China and you happen to need to Mandarin course, do not hesitate to sign up, and it is free.

Source: 外國人才在上海