Recently, the high-precision piezoelectric MEMS fast steering mirror, independently developed by the National Key Laboratory of Sensor Technology at the Shanghai Institute of Microsystem and Information Technology, which is part of the Chinese Academy of Sciences, was sent into orbit. It was aboard a laser communication terminal crafted by the 34th Research Institute of China Electronics Technology Group Corporation (CETC). This successful launch has enabled the establishment of the first in-orbit link. The laser communication terminal on board is a vital component for constructing a satellite internet. It boasts benefits like ultra-high bandwidth, ultra-low latency, and robust confidentiality. Given its compact size, low power consumption, and high bandwidth capabilities, the MEMS fast steering mirror has emerged as a pivotal element within the laser communication terminal. In this particular launch mission, 32 MEMS fast steering mirrors were deployed into orbit through a 'multi-satellite launch' approach. They were distributed across various laser communication terminals to support the establishment of an in-orbit link for a specific constellation. This achievement marks the inaugural instance where domestically developed MEMS fast steering mirrors have been launched in large quantities, with all successfully functioning in orbit.