I do not have any information that Ya Li pears are chilling susceptible and the recommended temperature is 32 degrees F.  However, I will forward your question to Carlos Crisosto in case he kn

Most European pears require either a period of cold storage or treatment with ethylene gas for proper and timely ripening after harvest.

For long term storage of pears, temperature can have a great affect on quality after storage.  The effect of short exposures to temperatures up to 41F has not been documented that I am aware o

Most European pears require either a period of cold storage or treatment with ethylene gas for proper and timely ripening after harvest.