SHANGHAI, March 25 (Xinhua) — Eloquent speakers of Shanghai dialect may have the privilege of having their voices recorded, as Chinese linguists move to the eastern economic hub to build a vocal database of local dialects and ethnic languages in China…the two-year project in Shanghai will be the third of its kind to complete a nationwide vocal database, an ambitious move of China to better preserve its linguistic diversity…China has more than 80 languages spoken by the people of its 56 nationalities and an unaccounted number of local dialects.