Among the 20 largest coastal cities with the highest flood losses by 2050, 13 are in Asia5, with a regional concentration in South, Southeast and East Asia . Furthermore, 9 of these cities  also have an additional risk of subsidence due to SLR and flooding . Guangzhou, China, is estimated to be the most economically vulnerable city in the world to SLR by 2050, with estimated losses of 254 million USD yr-1 under 0.2 m SLR . With a 2°℃ warming, Guangzhou is expected to see SLR of 0.34 m; under 5°C warming, this number would rise to 1.93 m. A more recent estimate calculates expected damage in Guangzhou due to SLR under RCP8.5 to reach 331 billion USD by 2050 and 420 billion USD under the high-end scenario with figures doubling by 2070. By 2100, expected damage could reach 1.4 trillion USD under RCP8.5 and 1.8 trillion USD under the high-end scenario. Similarly, in Mumbai  SLR damages amount to US$ 112-162 billion by 2050 and could increase by a factor of 2.8-2.9 by 2070 . In coastal cities such as Bangkok and Ho Chi Minh City, projected land subsidence rates, mainly due to excessive groundwater extraction, are comparable to, or exceed, expected rates of SLR, resulting in an additional 0.2 m SLR by 2025 . In Shanghai, current annual damage by coastal inundation is estimated at 0.03% of local GDP; under RCP4.5, this increases to 0.8% by 2100  and is further exacerbated by land subsidence and socioeconomic development . It is important to note that these projections assume  no adaptation and  that damage repairs are undertaken and completed annually. Given these assumptions, while these estimates communicate the scale of projected impacts, they are indicators of possible damages in the absence of adaptation and not actual projections.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report