tourist visa to chengdu

Yes, you can apply form Yangon. The required documents include your passport, a photocopy of the passport, a completely filled-out application form attached with your recently-taken color bare-headed photo, your residence permit or work permit in Myanmar and its photocopy, a financial standing proof, round-trip tickets booing records and proof of a hotel reservation.

thank you for your response. Will employment contract and multiple entry business visa be okay rather than residence permit/ work permit?

Yes, I think so. You can offer your work certificate as the residence permit.