144 hour visa for NZ cruise passengers

My partner and I from New Zealand will be on a cruise that travels to various ports in Asia. Our first port in China is Beijing and then we sail to Korea, and then another stop in Shanghai. This is all within the 144 hours. Our ship will only be docked in Beijing and Shanghai for one day each for passengers to do tours and shopping (either as part of ship group or alone). Do we require a visa or will the 144 free transit be appropriate? Thank you.