Tā de wénzhāng xiě de tài huìsè le, dúzhě hěn nán zhuāzhù zhòngdiǎn.
His article is written too obscurely; readers have a hard time grasping the main point.
Tips
memory
晦 means 'dark/gloomy' (as in a moonless night) and 涩 means 'rough/astringent.' Something 晦涩 is as hard to penetrate as darkness, and as rough to swallow as something astringent.
