Complex sentence: Foxmail is a cost-free e-mail client owned by Tencent who acquired it in 2005 from the original author, Zhang Xiaolong (张小龙), an alumnus of HUST in Wuhan.
Split into simpler sentences: Foxmail is a cost-free e-mail client owned by Tencent. The original author was Zhang Xiaolong (张小龙), an alumnus of HUST in Wuhan.