Lenovo Experience Improvement collects telemetry data on Lenovo systems.
The website Should I Remove It? describes it as:
The Lenovo Experience Improvement application is an option program that is pre-installed with various PC models. It is designed to provide feedback to Lenovo about the user’s usage and overall experience using the computer by reporting any errors, etc. […] Regardless if the user decides to participate, the program will install itself in the Startup using the Windows Startup Task Schedule arn will launch on reboot/login. Removing the software is safe and will not effect the functionality of the laptop as it is not required.