系xì · xi

to link, connect closely. 7 strokes, radical 糸, first met in HSK 3.

Pinyin xì · xiStrokes 7Radical 糸Band HSK 3Words 5

What 系 is made of

丿 (piě, slash) and 糸 (mì, silk).

Thread.

Stroke 1 write 丿, then strokes 2–7 write 糸.

Free, with no account: the app draws each stroke, then you write it and it says which stroke went wrong.

系(xì)	to link, connect closely 紧紧地连接在一起各部门保持紧密联系。Every department works to stay closely connected. Lesson 232, 职场信函与业务沟通 · 职场交往与个性养成 · Professional Rapport, Character Traits & Human Potential
关(guān)系(xi)	the connection linking two unrelated matters 人与人、事与事之间彼此连着的那种联系这两件事之间似乎并没有什么关系。There seems to be no their relationship between these two matters. Lesson 125, 亲情温暖 · 人际沟通与情感态度 · Interpersonal Connections & Emotional Expressions
联(lián)系(xì)	to contact, a connection 人与人之间来往、互通消息毕业后我们仍然保持联系。After graduation we made sure to stay in touch. Lesson 173, 协商交流与联系 · 国际视野与外交盛会 · Global Relations, Diplomacy & World Gatherings
系(xì)统(tǒng)	a system 由许多部分组成、能一起运作的整体团队全面测试运行系统的性能。The team fully tested the performance of the whole system. Lesson 350, 慎终如始与系统稳态 · 研精致思与盛夏清波 · Systemic Precision, Deep Learning & Summer Rhythms
系(xì)列(liè)	a series 按一定顺序排列、彼此相关的一组事物他下载了一系列学术文献。He downloaded a whole series of academic papers. Lesson 351, 研精毕智与潜心求索 · 研精致思与盛夏清波 · Systemic Precision, Deep Learning & Summer Rhythms

All 44 of them, and what the radical means, on the 纟 radical page.