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Despite the improvement, the Beijing-Tianjin-Hebei region continues to suffer the worst air quality in the country. Only about 51 percent of days in the region had fairly good air quality in May, though the region has seen decreases in both PM2.5 and PM10 year-on-year.

Demonstrators throw stones towards police during a protest against a new citizenship law in Seelampur, area of Delhi, India Dec 17, 2019. [Photo/Agencies]

Despite the lack of an agreement on the pact, the three countries released a joint statement on Sunday that they "shared the recognition that defense-related confidence-building among countries in the region is important, and committed to strengthening cooperation to institutionalize such efforts".

Demand for devices such as coronary stents, heart pacemakers, prosthetic joints and ocular implants has grown in recent years, but patients have complained about their prohibitive price tags.

Despite the government's promise to continue addressing concerns over the bill and repeated calls for rational discussions both at the LegCo and in the community, the LegCo meeting slated on June 12 had to be delayed after protesters violently stormed and vandalized the LegCo building.