仍须 is an adverbial phrase meaning 'still need to' or 'must still'. It combines 仍 (rēng), meaning 'still' or 'yet', and 须 (xū), meaning 'must' or 'need to'. Together, they express a continuing necessity — something that was required before and remains required now, often despite changes in circumstances or expectations. It carries a formal, slightly literary tone and is common in written Chinese, official notices, academic writing, and serious spoken contexts like meetings or instructions.

This phrase emphasizes persistence of obligation: the action hasn’t been completed, and the requirement hasn’t been lifted. It’s stronger and more urgent than just 仍要 (rēng yào) and more formal than 还得 (hái dé). It’s frequently used with verbs indicating duty, preparation, verification, or compliance — such as 完成 (wánchéng, 'complete'), 确认 (quèrèn, 'confirm'), or 提交 (tíjiāo, 'submit').