Taiwan reported a record-breaking number of 103 Chinese warplanes flying towards the island in a single day.

TAIPEI, Taiwan — China’s military sent 103 warplanes toward Taiwan in a 24-hour period in what the island’s defense ministry said Monday was the most for a day in recent times.

The ministry stated that the planes were detected from 6 a.m. on Sunday to 6 a.m. on Monday. Following the usual pattern, they changed direction before reaching Taiwan.

China, which claims Taiwan as part of its territory, has conducted increasingly large military drills in the air and waters around Taiwan as tensions have grown between the two and with the United States. The U.S. is Taiwan’s main supplier of arms and opposes any attempt to change Taiwan’s status by force.

Taiwan’s Defense Ministry announced that 40 aircrafts have crossed the symbolic midpoint between mainland China and the island. Additionally, it reported the presence of nine naval ships within the last 24 hours.

The ministry labeled the Chinese military’s actions as “harassment” and cautioned that it could potentially worsen the already tense situation. In a statement, the ministry urged the authorities in Beijing to take responsibility and promptly cease these harmful military activities.