BAC NINH, Vietnam — The transformation of Vietnam's Bac Ninh is evident in the signs above its shops and the spicy Chinese and Korean dishes on its tables.
Once known for its rice fields and the love duets of its centuries-old Quan Ho folk songs, the city just north of Hanoi has become one of Vietnam's busiest factory zones, reflecting a surge of investment, hastened by President Donald Trump's tariff hikes, that are reshaping the region.
The economy has profited from friction between Washington and Beijing as factories shifted out of China, joining earlier waves of foreign investment by the Japanese and South Koreans that have made Vietnam a global manufacturing hub. But rising labor costs, worker shortages and inadequate infrastructure are exposing the limits to its rapid rise.
With rivals like Indonesia and the Philippines competing hard for new projects, Vietnam is trying to climb into higher-value manufacturing and expand export markets to maintain that momentum. That effort is evident in Bac Ninh.
Vietnam is building more capacity
Traditionally a center for artisans, Bac Ninh's first boom began around 2008 when Samsung built its first phone factory there, turning Vietnam into its largest offshore manufacturing base.
Now, Chinese companies are pouring in as they diversify their factory locations to skirt U.S. tariffs and other trade restrictions. After Hanoi and Beijing normalized ties in the 1990s, inflows of Chinese investment began to pick up as Chinese firms in places like Bac Ninh tapped Vietnam's electronics supply chain, labor force and supportive local governments, often aided by Chinese-speaking intermediaries who smooth paperwork and logistics.
But Vietnam is too small to replace China, whose economy is 40 times larger, as the world's factory floor. To try to keep up, its leaders are building new infrastructure, including a highway to the Chinese border that has cut travel time by more than an hour. A railway will connect Hanoi to Haiphong — Vietnam's largest seaport — and then the border town of Lao Cai.