Chinese Foreign Minister Wang Yi has started his new year diplomatic trip to Africa. Wang arrived in Eritrea on Tuesday. He will also visit Kenya and Comoros on the trip. China has been Africa's largest trading partner for more than a dozen years, and it's become a tradition for Chinese foreign ministers to start every year by visiting Africa. When it comes to Kenya, what are some of the major cooperation milestones and achievements over this time period? Our correspondent Nick Mudimba in Mombasa has more.