Two black swans got trapped on a frozen lake, unable to move anything but their necks in northern China.

The video was filmed in Harbin City in Heilongjiang Province on November 7.

Witnessing students explained that the sudden drop in temperatures, common in Northeast China, had led to the swans' predicament. It was an occurrence that the locals had grown accustomed to.

One student recalled that on November 6, the lake was still free of ice, but with the plummeting nighttime temperatures, they discovered the swans encased in frozen water on November 7.

Despite their currently stable appearance, the swans had faced similar situations in previous years, suggesting their resilience to the cold.

However, concerns were rising about their prolonged exposure to the harsh conditions. A compassionate maintenance worker attempted to rescue the swans by rowing a boat to reach them, but the swans were uncooperative, plunging into the water. The worker remarked that they might need to "freeze a bit more" before attempting another rescue.

A staff member from Harbin Normal University disclosed that the relevant authorities had been notified about the stranded swans. However, due to the necessity of a certain ice thickness, they would have to wait until the ice froze to a suitable depth before initiating the rescue.

In accordance with the swans' natural habits, the university's management traditionally retrieves the swans from the lake each year when it freezes, providing them with shelter in a warm facility for the winter.

The video was provided by local media with permission.

11月7日，黑龙江哈尔滨师范大学内，两只黑天鹅被冻在了湖面上，身体无法动弹，只有脖子能动。
目击同学表示，因为在东北气温骤降很正常，黑天鹅每年都会被冻住，已经习惯了。
她回忆，6日时，湖面还没有结冰，夜里温度低，7日就发现被冻上了。天鹅目前看着状态还行，往年也会出现这个情况，应该比较耐寒，但时间久了，她有些担心天鹅受不了。有管理员大爷尝试划船去救鹅，但天鹅不太配合，一拽就往水里钻，大爷说还得“再冻冻”。
哈师大一名工作人员表示，就天鹅受困之事已经通知了相关部门，但要等冰都冻上，冻到一定厚度才能救。
据了解，根据黑天鹅的习性，管理员会在每年出现冰冻后，将湖中生活的天鹅们收回，并送入“暖库”里过冬。