HSK 6
Jǐngchá shèzhì le bāowéiquān, dǔzhù le táofàn de qùlù.
The police set up a cordon, blocking the fugitive's escape route.
HSK 7-9
Díjūn xiànrù le wǒjūn de bāowéiquān, wúlùkětuì.
The enemy troops fell into our army's encirclement with no way to retreat.