Understanding the chemical diversity and evolution of low-mass star forming regions is an essential topic related to astrophysics and astrochemistry. We start an observatoinal compaign to study the properties of 40 molecular cores in the Aquila/Serpens molecular cloud with the APEX telescope. With the MPIFR new generation broad-band receiver PI230, we carried out a 212-280 GHz line survey toward these sources. More information can be found in the catalog page.