What is the limit of the number of three-way calls on Fujian Unicom's mobile phone?

what's the limit for the number of three-way calls of Fujian Unicom?

The number of three-way calls of Fujian Unicom's mobile phone is limited as follows:

1. Fuzhou, Nanping, Ningde, Sanming and Putian: at most 6 users can talk at the same time;

2. Xiamen, Quanzhou, Zhangzhou and Longyan: at most 3 users can talk at the same time.