The app includes content on mathematics, linear algebra, and probability. It covers definitions, theorems, formulas, methods, and summaries, organized by chapter with an index for searching and collecting.
Explore the structure and meanings of the I Ching, including the 64 hexagrams and 384 lines. Study interpretations from classical texts like the Ten Wings. Access commentaries by scholars such as Zhu Xi and Zhang Shenfeng.
The app helps users quickly query the origin, carrier, and common service number information for unknown phone numbers. It can also batch extract numbers from pasted text, processing up to 30 results at once.