Definition of "Xiju"

This is the southernmost inhabited island in the Matsu archipelago, actually consisting of two islands, Dongju and Xiju. […] Xijyu[sic] is a little more lively, but you'll likely be the main attraction, given the island's lack of actual tourist sights.

2011, Phil Macdonald, “Strait Islands”, in Taiwan‎, 3rd edition (Travel), National Geographic Society, page 206, column 1

Three ferries per day sail from Nangan to Xiju’s Qingfan Port and Dongju’s Mengao Harbour (departs 🕘︎ 07.00, 11.00 & 14.30; takes 50mins; NTD200 one-way). These boats sometimes stop at Dongju before Xiju; confirm the first destination when buying your ticket. Sailing time between Xiju and Dongju is 15 minutes. Ferries return to Nangan right away.

2014, Steven Crook, Taiwan (Bradt Guides)‎, 2nd edition, page 328

The islands of Jyuguang Township (莒光鄉; Jǔguāng xiāng), Dongju (東莒; Dōngjǔ; Tongchu) and Xiju (西莒; Xījǔ; Hsichu), are the most southerly of Matsu’s islands. Both are remote and sparsely inhabited, but there's some pretty scenery.

2017 May, Piera Chen, Dinah Gardner, “Taiwan's Islands”, in Lonely Planet Taiwan (Lonely Planet)‎

In the past, stowaways often used intermediaries at sea to pick them up and take them to Nangan (南竿) or Xiju (西莒) islands to wait for an opportunity to sneak into Taiwan proper, she said.

2019 June 19, “Matsu authorities aim to crack down on smuggling”, in Taipei Times‎, archived from the original on 18 June 2019, Taiwan News, page 2‎

In addition to daily flights often disrupted by fog between March and May from and to Taiwan proper, ferries are the main means of transportation between Taiwan and Matsu and between islands in Matsu, including services from Nangan to Jyuguang Township two main islands -- Dongju and Xiju.

2023 March 6, Joseph Yeh, “Taiwan military plane taking meat to frontline troops amid supply shortage”, in Focus Taiwan‎, archived from the original on 06 March 2023, Politics‎