Positive sentiment for helping high-tech businesses in Hong Kong - a promise given by Hong Kong's chief executive, Carrie Lam Cheng Yuet-ngor to reduce the profit tax on companies and grand tax remissions for their investments in R&D (research and development). This doubtless would attract existing business to invest more in qualifying research and development as well as would attract new investments from abroad to establish new technical divisions in Hong Kong
As per the local new incentives over tax in China and in the US are announced (I mean the softening of tax burdens on corporates) this we may reckon as a positive signal for HK outlook. As well, more finance analyst in Hong Kong are confident and optimistic about HK this year and the next 2019. As you understand Hong Kong is likely to catch up this positive effect (the recovery of the US and mainland China) for the simple reason that Hong Kong plays its role as international financial center - at lease one of the biggest.
I would attract your attention to some negative factors which I see would be the main obstacles for Hong Kong economy developing more that 5% per year (in GDP terms): (a) not enough investments to build-up resident property for meeting the rising demand, HK has very high property prices, (b) political environment does not give me confidence to invest and preserve value (as foreign investor), and (c) the competition from other countries in light industries, in tourism, in banking city center leadership.