I've been traveling solo around the world and not a resident of any other country except an extended stay in China but all tourist visa hopping.. Am I a deemed resident?

If you are unsure of your residency status, you will need to contact the Canada Revenue Agency (CRA) and confirm it with them. If you are in Canada or the United States, you can call the CRA at 1-800-959-8281. If you are elsewhere you can call 613-940-8495. This page has more ways to contact the CRA: https://www.canada.ca/en/revenue-agency/corporate/contact-information/telephone-numbers.html