Abstract: Systems, methods, and non-transitory computer-readable media can receive, via a user interface provided to a user, test device information identifying one or more user computing devices as test devices. An advertisement request is received from a first user computing device. A determination is made that the first user computing device is identified as a test device. A test advertisement is transmitted to the first user computing device based on the determination that the first user computing device is identified as a test device.

Abstract: A wine decanter comprises a wine feeding funnel that axially passes through the whole body of the wine decanter, a mixing cavity, and a wine discharge funnel. A gas guide tube is disposed in the wine feeding funnel. One end of the gas guide tube is accommodated in the mixing cavity, and the other end is provided with an umbrella end capable of fully covering but not blocking the passage of the gas guide tube. The gas guide tube is further provided with a connection sheet perpendicular to the axial direction of the gas guide tube and having several through holes. The periphery of the connection sheet is matched with and connected to an inner wall of the wine feeding funnel, and divides the wine feeding funnel into upper and lower cavities. The wine decanter enables wine to contact air for multiple times, avoids blocking the gas inlet tube, and obstructs dust.