Principal English Translation:
to China; or, the Philippines
Attestations from sources in English:
The incorporation of ala- (a la, or, to the) at the front of a location shows influence from Spanish. References to China usually meant the Philippines. Other examples include alahuerta and alaflorida.
For further explanation and examples, see James Lockhart, The Nahuas after the Conquest: A Social and Cultural History of the Indians of Central Mexico, Sixteenth through Eighteenth Centuries (Stanford: Stanford University Press, 1992), 567 n108.