According to RTHK, Yonhap and HKET, Asian equities opened broadly lower on Tuesday, tracking an overnight retreat in US technology and semiconductor shares, with Seoul and Tokyo leading regional declines while Hong Kong steadied on a bounce in Alibaba.

Tokyo's Nikkei 225 slipped below the 65,000 mark early, trading at 64,928.63, down 0.91% or 599.46 points as of 01:38 UTC, after most AI-linked heavyweights fell. Advantest dropped 4.46% while SoftBank Group eased 0.54%. The index had ended Monday at 65,528.09.

Seoul's Kospi tumbled 2.69%, or 180.12 points, to 6,516.84 as of 01:38 UTC, extending the prior session's slide, with the Kosdaq opening down 6.40 points at 806.93. Samsung Electronics fell 3.31% and SK Hynix dropped 5.63% after Yonhap reported the chipmaker's union narrowly rejected a tentative wage deal, with 50.08% voting against.

Hong Kong stocks steadied after Monday's rout, with the Hang Seng Index opening up 116 points at 25,634 and the Hang Seng Tech Index up 0.2% at 4,602. The benchmark stood at 25,540.50, up 0.09%, as of 01:38 UTC. Alibaba rebounded 2.04% to HK$114.80 a day after its record HK$80 billion share placement to fund AI, while Xpeng dropped more than 8% following results.

Taiwan's TAIEX opened down 33.96 points at 44,728.36 and extended losses to 44,416.01, off 0.77% or 346.31 points as of 01:38 UTC, as chip names weakened. TSMC fell 0.84% to NT$2,355.

In mainland China, the Shanghai Composite eased 0.36% to 3,868.04, the CSI 300 fell 0.56% to 4,537.41 and the Shenzhen Component dropped 1.17% to 13,632.24, all as of 01:39 UTC, with technology sectors under pressure amid a report the US plans to impose a 7.5% overcapacity tariff on Chinese goods ahead of a Xi-Trump meeting.