The first billboard that greets passengers arriving at the airport in Lusaka, before Pepsi’s “Welcome to Zambia,” is an advertisement for Bank of China. Nearby, a Chinese company is building a sleek terminal. On the road into the capital city, near the office of Chinese telecom company ZTE Corp., another billboard features surveillance cameras made by Hangzhou Hikvision Digital Technology Co. At the national data center built by Huawei Technologies Co., a Chinese man in a bright orange vest walks toward a building that houses government servers.