Chulbulibulbuls01ep01t021080phevcwebdlhi -

Having t02 tells you to look for t01 for the complete viewing experience.

To understand what this file string represents, we must parse its individual nomenclature segments: chulbulibulbuls01ep01t021080phevcwebdlhi

So the full interpretation is:

Full HD — 1920×1080 pixels. Good balance between quality and file size. Having t02 tells you to look for t01