How about the overseas companies of China Railway Seventh Bureau? Ask for answers

I also just signed with the Seventh Bureau today. After chatting with the recruitment manager of the overseas company, I went to other companies in the Seventh Bureau. The remuneration should be very good, but the situation in Africa is indeed not stable enough, and the climate is relatively hot. There are military and police protection when working, and there are also military and police protection in the living area. Although there are people protecting me, I feel a little worried.