FARGO, N.D. — It was an unexpected twist that led the Rev. Yuanlai Zhang — a minister who lived among 13 million others in the hot and humid Chinese city of Shenzhen — to start a new life on the sparse and frigid prairie of North Dakota. But Zhang has become a man of the plains. A Mandarin-language preacher who travels the state with a Bible and a pressed suit, he lives with his wife and toddler in suburban Fargo. He’s the first full-time pastor at the Red River Valley Chinese Christian Church, which was founded five years ago and whose 50-family congregation is the largest Chinese Christian flock in North Dakota.