Highways in Shanghai are empty under 2-phase citywide lockdown. Screen capture from People's Daily's Weibo video. After two weeks of soft lock-down under the pandemic control strategy of “Precise Prevention and Control,” Shanghai, home to 25 million residents, started a two-phase shutdown as the city’s public health system is on the verge of collapse and the number of confirmed Omicron cases has continued surging. Many believe that the decision for a large-scale lockdown signifies the failure of the Shanghai model, a middle path between the zero-COVID-19 and living with COVID-19 strategies. As China’s domestic financial center, Shanghai had been avoiding a complete shutdown of the city despite the outbreak of Omicron. Instead, the city has adopted a Precise Prevention and Control strategy which involves district-level massive testing and lockdowns. The rationale is to control the outbreak scale and prevent the collapse of the public health system. However, on 27 March, Shanghai officials announced that they were splitting the city into two big districts, each of which would be locked down for 5 days. All public transportation would be suspended and residents had to go through rounds of testing during the lockdown period. The sudden announcement triggered panic buying. Videos on various social media platforms show people fighting over food in supermarkets. Here is one posted by @shaunrein on Twitter: Things are falling apart in Shanghai as panic buying in supermarkets are taking place as Pudong goes into lockdown Plenty of food but not enough delivery brothers Until recently Shanghai authorities did an A+ job. They still are but there are ways of improvement to calm public pic.twitter.com/l7vySGJuK3 — Shaun Rein (@shaunrein) March 28, 2022 The following morning, the city’s officials released that the number of confirmed cases on March 27 reached 3500, a record high. Rumours about the citywide lockdown had been circulating for a few days, but the authorities denied then and arrested two individuals. The city’s health care system was on the verge of collapse as the outbreak has affected medical care for non-COVID-19 patients. There has been an outpour of rage on social media following the death of a nurse who died from asthma after she was turned away from medical service in her own hospital’s emergency ward. Opinions regarding Shanghai’s lockdown are divided. Some believe the protocol of zero-COVID-19 strategy is the only way out of the chaos, pointing to the success of Shenzhen’s citywide lockdown in comparison with Shanghai’s Precise Prevention and Control approach. Twitter user @limingchu998 shared a figure comparing the number of confirmed cases between March 12 and March 25. After the citywide lockdown, Shenzhen’s number of confirmed cases had been suppressed to a single digit: 不得不说，封城还是有效果的，本来以为深圳和上海都是发达地区，管理水平应该都是一流的。 没有对比就没有伤害啊，疫情就是照妖镜，除了管理水平，还需要服从性，精准防控看来防而不控啊。 pic.twitter.com/6iCtTPeYNa — robin境由心生 (@limingchu998) March 27, 2022 The effect of citywide lockdown is obvious. Both cities are well-developed with top-level city management ability. The epidemic is like a mirror reflecting the cities’ performance. In addition to management, it is also about the level of obedience. The so-called precise prevention and control have lost control. Yet, some have pointed out that the cost of citywide lockdown in first-tier cities is huge and unsustainable. Veteran Chinese journalist @rongjian1957 tweeted: 最高指示以最小成本取得抗疫胜利，深圳封城三天了，据说损失600亿，发现643个病人，无症状21%，轻症状72%，普通型7%，重症0，死亡0，平均一个阳性一个亿，这大概就是最小成本了。 pic.twitter.com/1zE4BULmfL — 荣剑 (@rongjian1957) March 20, 2022 The top authorities said China had to combat the outbreak with minimum cost. The economic cost of a 3-day lockdown in Shenzhen is about RMB 60 billion yuan [approximately US 95 million dollars]. During the 3 days, 643 cases were identified, of which 21 percent were asymptomatic, 72 percent were mild cases, 7 percent demanded medical attention. There were zero heavy and death cases. On average, the city spent about RMB 60 million to identify a positive case. This is the minimum cost. The social cost of a citywide lockdown is huge too. While the majority of districts in Shenzhen have been reopened, a few that had not reached the zero case target had been locked down for more than two weeks and residents were desperate.