"Extremely difficult" • Chinese-English Dictionary
| 艰巨 | jiān jù | (of a task, mission or responsibility) extremely difficult / challenging / demanding |   |
| 万难 | wàn nán | countless difficulties / extremely difficult / against all odds | |
| 高难 | gāo nán | extremely difficult / hard and dangerous / challenging | |
| 千难万难 | qiān nán wàn nán | extremely difficult | |
| 难上加难 | nán shàng jiā nán | extremely difficult / even more difficult | |
| 难上难 | nán shàng nán | extremely difficult / even more difficult | |
