SHANGHAI, June 16 (Reuters) - China's digital yuan operation centre signed direct participant agreements with 26 financial institutions ‌in Shanghai on Tuesday, aiming to expand low-cost, ‌efficient cross-border payments and advance global adoption of the Chinese currency. • The ​international operation centre of the digital yuan was established and managed by the People's Bank of China. • The agreement will allow participants to join the Cross-border e-CNY Transfer Services, or ‌CBETS, an integrated c ...