Vietnam's Ministry of Planning and Investment published findings that five second-tier provinces more than doubled their foreign direct investment (FDI) from 2016 to 2021, Nikkei Asia reported Sept. 2. In a second massive wave of FDI into Vietnam, a lack of available real estate in the country's three main cities (Ho Chi Minh City, Hanoi and Da Nang) is rapidly pushing industrial investors into second-tier locales.