Malaysia passport holder from Tokyo transit Shanghai (SHA-PVG) and to Singapore by China Eastern

My flight from Tokyo to Shanghai Hongqiao and transit via Pudong airport to Singapore by China Eastern. Do i need to collect my luggage from Hongqiao, find my way and pay for own transport to Pudong airport? Do i need to have any VISA for doing so? shouldn't this all arrange by the respective Airline? Kindly advice.