The research team led by Chen Jingbiao from Peking University's School of Electronics Engineering and Computer Science has pioneered the world's first Voigt optical frequency standard, leveraging atomic frequency-selective technology. This innovation marks a significant advancement in realizing a fully automated, high-performance compact optical clock. By overcoming the challenge of low light intensity in atomic filters for optical communication, the team has developed the Voigt laser. When combined with a fully automated modulation transfer spectrum frequency locking scheme, this laser enables the creation of a robust, self-sustaining optical clock with exceptional performance. This achievement underscores the vast potential of atomic frequency-selective lasers in the realm of miniaturized and autonomous systems, paving the way for the application of portable atomic clock devices in scientific research, as well as in dual-use military and civilian fields.